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See searches and references containing BACKGROUND FIELD-METHOD!BACKGROUND FIELD-METHOD
Technique in quantum field theory
physics, background field method is a useful procedure to calculate the effective action of a quantum field theory by expanding a quantum field around a
Background_field_method
Theoretical framework in physics
nearly the only exponents of field theory, but in 1951 he found a way around the problem of the infinities with a new method using external sources as currents
Quantum_field_theory
Quantum state with the lowest possible energy
In quantum field theory, the quantum vacuum state (also called the quantum vacuum or vacuum state) is the quantum state with the lowest possible energy
Quantum_vacuum_state
Quantum field theory
classical waves of the field travel at the speed of light. More unsolved problems in physics Yang–Mills theory is a quantum field theory for nuclear binding
Yang–Mills_theory
Quantum version of the classical action
{\displaystyle \phi } line could be attached. This is very similar to the background field method which can also be used to calculate the effective action. Alternatively
Effective_action
Field equation from quantum gravity
Wheeler–DeWitt equation for theoretical physics and applied mathematics, is a field equation attributed to John Archibald Wheeler and Bryce DeWitt. The equation
Wheeler–DeWitt_equation
Lowest possible energy of a quantum system or field
Fontana and Bernd Binder presented a new method to potentially extract the Zero-point energy of the electromagnetic field and nuclear forces in the form of gravitational
Zero-point_energy
Physical theory with fields invariant under the action of local "gauge" Lie groups
Gauge theories may be quantized by specialization of methods which are applicable to any quantum field theory. However, because of the subtleties imposed
Gauge_theory
Japanese physicist (1906-1979)
applied his super-many-time theory and a relativistic method based on the non-relativistic method of Wolfgang Pauli and Fierz to greatly speed up and clarify
Shin'ichirō_Tomonaga
Type of approximation to an underlying physical theory
made systematic. Although this method is not sufficiently concrete to allow the actual construction of effective field theories, the gross understanding
Effective_field_theory
Study of subatomic particles and forces
fundamental particles and forces that constitute matter and radiation. The field also studies combinations of elementary particles up to the scale of protons
Particle_physics
Extension of quantum field theory to curved spacetime
formulated quantum field theories in curved spacetime. These theories rely on general relativity to describe a curved background spacetime, and define
Quantum field theory in curved spacetime
Quantum_field_theory_in_curved_spacetime
Process in quantum mechanical theories
This method was further used by Paul Dirac in the context of quantum field theory, in his construction of quantum electrodynamics. In the field theory
Canonical_quantization
Dimensionless number that quantifies the strength of the electromagnetic interaction
agreement for the value of α, as measured by these different methods. The preferred methods in 2019 are measurements of electron anomalous magnetic moments
Fine-structure_constant
Method in physics used to deal with infinities
Renormalization is a collection of techniques in quantum field theory, statistical field theory, and the theory of self-similar geometric structures,
Renormalization
Visual art occupation
program or film. Current methods may involve painting primarily background keys or the establishing shot while production background artists paint the corresponding
Background_artist
Mathematics of a particle physics model
The Standard Model of particle physics is a gauge quantum field theory containing the internal symmetries of the unitary product group SU(3) × SU(2) × U(1)
Mathematical formulation of the Standard Model
Mathematical_formulation_of_the_Standard_Model
Force resulting from the quantisation of a field
In quantum field theory, the Casimir effect (or Casimir force) is a physical force acting on the macroscopic boundaries of a confined space which arises
Casimir_effect
Formulation of the quantum many-body problem
are thought of as operators in first quantization. The key ideas of this method were introduced in 1927 by Paul Dirac, and were later developed, most notably
Second_quantization
Physical field theory with no forces/interactions
a free field is a field without interactions, which is described by the terms of motion and mass. In classical physics, a free field is a field whose equations
Free_field
Theorem for reducing high-order derivatives
This allows for the use of Green's function methods, and consequently the use of Feynman diagrams in the field under study. A more general idea in probability
Wick's_theorem
Maximally helicity violating amplitudes
also known as the Britto–Cachazo–Feng–Witten (BCFW) on-shell recursion method, is a way of calculating scattering amplitudes. Extensive use is now made
MHV_amplitudes
Function in quantum field theory showing probability amplitudes of moving particles
In quantum mechanics and quantum field theory, the propagator is a function that specifies the probability amplitude for a particle to travel from one
Propagator
Procedure of coping with redundant degrees of freedom in physical field theories
mathematical procedure for coping with redundant degrees of freedom in field variables. By definition, a gauge theory represents each physically distinct
Gauge_fixing
Function that encodes the dependence of a coupling parameter on the energy scale
In theoretical physics, specifically quantum field theory, a beta function or Gell-Mann–Low function, β(g), encodes the dependence of a coupling parameter
Beta_function_(physics)
Action of a massive abelian gauge field
In physics, specifically field theory and particle physics, the Proca action describes a massive spin-1 field of mass m in Minkowski spacetime. The corresponding
Proca_action
Symmetry breaking through the vacuum state
made about the cosmic microwave background. For the electroweak model, as explained earlier, a component of the Higgs field provides the order parameter
Spontaneous_symmetry_breaking
Quantum field theory of electromagnetism
particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter
Quantum_electrodynamics
Topics referred to by the same term
processor Foreground-background segmentation, a method for studying change blindness using photographs with distinct foreground and background scenery Foreground
Foreground_and_background
Quantum field that enables consistent quantization
ISSN 0370-2693. Chen, W.F. (2008), "Quantum Field Theory and Differential Geometry", Int. J. Geom. Methods Mod. Phys., 10 (4): 1350003, arXiv:0803.1340v2
Ghost_(physics)
Topics referred to by the same term
located in Lancaster University Background field method, a procedure to calculate the effective action of a quantum field theory Bacterial flagellar motor
BFM
Formulation of quantum mechanics
a method for summing up all possible random walks. The path integral has impacted a wide array of sciences, including polymer physics, quantum field theory
Path-integral_formulation
Trace radiation from the early universe
The cosmic microwave background (CMB, CMBR), or relic radiation, is microwave radiation that fills all space in the observable universe. With a standard
Cosmic_microwave_background
Connection between correlation functions and the S-matrix
In quantum field theory, the Lehmann–Symanzik–Zimmermann (LSZ) reduction formula is a method to calculate S-matrix elements (the scattering amplitudes)
LSZ_reduction_formula
Interplay between observation, experiment, and theory in science
Although procedures vary across fields, the underlying process is often similar. In more detail: the scientific method involves making conjectures (hypothetical
Scientific_method
Quantum field giving rise to gluons
In theoretical particle physics, the gluon field is a four-vector field characterizing the propagation of gluons in the strong interaction between quarks
Gluon_field
to date, failed. The study of quantum field theory is still flourishing, as are applications of its methods to many physical problems. It remains one
History of quantum field theory
History_of_quantum_field_theory
Type of unphysical field in quantum field theory which provides mathematical consistency
action, such that methods such as Feynman diagrams will be applicable by adding ghost fields which break the gauge symmetry. The ghost fields do not correspond
Faddeev–Popov_ghost
Type of operator expectation value
In quantum field theory, the vacuum expectation value (VEV) of an operator is its average or expectation value in the vacuum. The vacuum expectation value
Vacuum_expectation_value
Pictorial representation of the behavior of subatomic particles
field theory ... In quantum field theories, Feynman diagrams are obtained from a Lagrangian by Feynman rules. Dimensional regularization is a method for
Feynman_diagram
Quantum chromodynamics on a lattice
lattice spacings a. Numerical lattice QCD calculations using Monte Carlo methods can be extremely computationally intensive, requiring the use of the largest
Lattice_QCD
Chinese-American physicist (1926–2024)
divergences connected with particles of zero rest mass, and described a general method known as the KLN theorem for dealing with these divergences, which still
Tsung-Dao_Lee
alignment Background-oriented schlieren technique Background count Background field method Background independence Background noise Background radiation
Index_of_physics_articles_(B)
Generating function for quantum correlation functions
correlation functions in non-vanishing background fields. For partition functions with Grassmann valued fermion fields, the sources are also Grassmann valued
Partition function (quantum field theory)
Partition_function_(quantum_field_theory)
Operator in quantum field theory
construction of the representation space. In quantum field theory, in the case of a massive field, the Casimir invariant WμWμ describes the total spin
Pauli–Lubanski_pseudovector
Effect in quantum electrodynamics
as the wave number approaches zero or infinity. As mentioned above, this method is expected to be valid only when ν > π c / a 0 {\displaystyle \nu >\pi
Lamb_shift
Second-rank tensor in quantum chromodynamics
In theoretical particle physics, the gluon field strength tensor is a second-order tensor field characterizing the gluon interaction between quarks. The
Gluon_field_strength_tensor
Introductory article
describe physical forces in terms of fields, e.g., the electromagnetic field, the gravitational field, and fields that describe forces between the elementary
Introduction_to_gauge_theory
Optical microscopy technique
not contain the sample. Finally, the background is dimmed ~70-90% by a neutral density filter ring; this method maximizes the amount of scattered light
Phase-contrast_microscopy
Topological field
theory is a topological field, which when quantized, becomes a topological quantum field theory. BF stands for background field B and F, as can be seen
BF_model
Dirac equation for self-interacting fermions
Ricci calculus and Van der Waerden notation for the notation. In quantum field theory, the nonlinear Dirac equation is a model of self-interacting Dirac
Nonlinear_Dirac_equation
Mechanism that explains the generation of mass for gauge bosons
The Higgs field resolves this conundrum. The simplest description of the mechanism adds to the Standard Model a quantum field (the Higgs field), which permeates
Higgs_mechanism
Expectation value of time-ordered quantum operators
In quantum field theory, correlation functions, often referred to as correlators or Green's functions, are vacuum expectation values of time-ordered products
Correlation function (quantum field theory)
Correlation_function_(quantum_field_theory)
Generalization of the Dirac equation
or frame fields { e μ } = { e 0 , e 1 , e 2 , e 3 } {\displaystyle \{e_{\mu }\}=\{e_{0},e_{1},e_{2},e_{3}\}} , which are a set of vector fields (which are
Dirac equation in curved spacetime
Dirac_equation_in_curved_spacetime
Theory of quantum gauge fields on a lattice
stochastically calculated using techniques such as the Monte Carlo method. Gauge field configurations are generated with probabilities proportional to e
Lattice_gauge_theory
Study of research methods
methods. However, the term can also refer to the methods themselves or to the philosophical discussion of associated background assumptions. A method
Methodology
on the estimated local field. Both methods model the background field as a magnetic field generated by an unknown background susceptibility distribution
Quantitative susceptibility mapping
Quantitative_susceptibility_mapping
Indian physicist
2012. Alvarez-Gaumé, L.; Freedman, D. Z.; Mukhi, S. (1981). "The background field method and the ultraviolet structure of the supersymmetric nonlinear σ-model"
Sunil_Mukhi
Axiomatization of quantum field theory
quantum field theory and are meant to provide a basis for rigorous treatment of quantum fields and strict foundation for the perturbative methods used.
Wightman_axioms
Rewriting an email message sender address
Scheme (SRS) is a scheme for bypassing the Sender Policy Framework's (SPF) methods of preventing forged sender addresses. Forging a sender address is also
Sender_Rewriting_Scheme
Parameter describing the strength of a force
theory, which is the main method of calculation in many branches of physics. Couplings arise naturally in a quantum field theory. A special role is played
Coupling_constant
Possible outcome of renormalization in physics
function β ( g ) {\displaystyle \beta (g)} was recently studied by different methods: (1) by summation the usual perturbation series in powers of g {\displaystyle
Quantum_triviality
Wave equations respecting special and general relativity
the field-theoretic Euler–Lagrange equations (see classical field theory for background). In the Schrödinger picture, the wave function or field is the
Relativistic_wave_equations
Photographic technique
Several methods can achieve simplicity in a photograph. One of the simplest is to place the subject against a neutral background such as a backdrop or
Simplicity_(photography)
Property of scattering amplitudes
In quantum field theory, a branch of theoretical physics, crossing is the property of scattering amplitudes that allows antiparticles to be interpreted
Crossing_(physics)
Process to photograph fluid flow
self-aligning methods. Traditionally, alignment of the focusing schlieren methods has kept them prohibitively hard to use. Background-oriented schlieren
Schlieren_photography
Mathematics award
The Fields Medal is a prize awarded to two, three, or four mathematicians under 40 years of age at the International Congress of the International Mathematical
Fields_Medal
Farming practices from 476 to c. 1500
in the 14th century with the development of more intensive agricultural methods in the Low Countries and after the population losses of the Black Death
Agriculture in the Middle Ages
Agriculture_in_the_Middle_Ages
Wave equation for arbitrary spin particles
In relativistic quantum mechanics and quantum field theory, the Bargmann–Wigner equations describe free particles with non-zero mass and arbitrary spin
Bargmann–Wigner_equations
Planning time spent on specific activities
Eisenhower method or Eisenhower principle is a method that utilizes the principles of importance and urgency to organize priorities and workload. This method stems
Time_management
American theoretical physicist
Pilaftsis, Apostolos (1997). "Generalized Pinch Technique and the Background Field Method in General Gauges". Nucl. Phys. B. 487 (1–2): 467–491. arXiv:hep-ph/9607451
John_Michael_Cornwall
Concept in computer vision
the major tasks in the field of computer vision and image processing whose aim is to detect changes in image sequences. Background subtraction is any technique
Foreground_detection
Distance between the nearest and the furthest objects that are in focus in an image
of Confusion for Near and Far Limits of Depth of Field, and The Object Field Method, in Depth of Field in Depth. Peterson does not give a closed-form expression
Depth_of_field
Field-equations in general relativity
the Einstein field equations via the method of orthonormal frames as pioneered by Ellis and MacCallum. In this approach, the Einstein field equations are
Einstein_field_equations
members of the National Front of Iran who wanted to use lawful political methods against the Shah; they were led by Bazargan and Mahmoud Taleghani. The
Background and causes of the Iranian Revolution
Background_and_causes_of_the_Iranian_Revolution
Aesthetic quality of blur in the out-of-focus parts of an image
photographer usually wants a shallow depth of field, so that the subject stands out sharply against a blurred background.[citation needed] Bokeh characteristics
Bokeh
Prevalent ownership and land use structure in medieval agriculture
The open-field system was the prevalent agricultural system in much of Europe during the Middle Ages and lasted into the 20th century in Russia, Iran
Open-field_system
Systematic study undertaken to increase knowledge
self-regulation by qualified members of a profession within the relevant field. Peer review methods are employed to maintain standards of quality, improve performance
Research
Ways in which researchers collect data via the Internet
background and methodologies of online clinical trials and list examples. The advent of social media has recently led to new online research methods,
Online_research_methods
Subset of artificial intelligence
Statistics and mathematical optimisation methods compose the foundations of machine learning. Data mining is a related field of study, focusing on exploratory
Machine_learning
trimap specifies background, foreground, and uncertain pixels, which will be decomposed into foreground and background by the matting method. The main criteria
Video_matting
Properties underlying modern physics
formulating physical theories and models. In practice, they are powerful methods for solving problems and predicting what can happen. While conservation
Symmetry_in_quantum_mechanics
Numerical analysis method
independent meshes is considered in the fictitious domain method: one for the unfitted background domain and another overlapping mesh that conforms to the
Fictitious_domain_method
Eye examination that can detect dysfunction in central and peripheral vision
a defined background. Perimetry more carefully maps and quantifies the visual field, especially at the extreme periphery of the visual field. The name
Visual_field_test
Particle physics experimental design developed 1924
Such a method is used to increase the sensitivity of an experiment to a specific particle interaction, reducing conflation with background interactions
Coincidence_method
Random background of gravitational waves permeating the Universe
The gravitational wave background (also GWB and stochastic background) is a random background of gravitational waves permeating the Universe, which is
Gravitational_wave_background
Study of general and fundamental questions
their fundamental concepts, methods, assumptions and implications. Philosophy is related to and informs many other fields, such as law, business, and
Philosophy
Teaching approach
The case method is a teaching approach that uses decision-forcing cases to put students in the role of people who were faced with difficult decisions at
Case_method
Compositing technique, also known as green screen
colour hues (chroma range). The technique has been used in many fields to remove a background from the subject of a photo or video — particularly the newscasting
Chroma_key
Method to visualize density variations in transparent media
visualization of the pressure field produced by ultrasonic transducers, generally in water or tissue-mimicking media. The method provides a two-dimensional
Schlieren_imaging
Technique to measure resistivity and Hall coefficient
The van der Pauw Method is a technique commonly used to measure the resistivity and the Hall coefficient of a sample. Its strength lies in its ability
Van_der_Pauw_method
Summability method in physics
zeta function regularization is a type of regularization or summability method that assigns finite values to divergent sums or products, and in particular
Zeta_function_regularization
Lowest quantity observable with sufficient confidence above the background
and in many other fields impossible to enumerate extensively, the problem is wider and deals with signal extraction out of a background of noise. It involves
Detection_limit
2000 compilation album by Kid Rock
consists of re-recorded versions of songs from Rock's 1993 album The Polyfuze Method, remixed versions of songs from his 1996 album Early Mornin' Stoned Pimp
The_History_of_Rock
Method of image segmentation
target object and that of the background using a Gaussian mixture model. This is used to construct a Markov random field over the pixel labels, with an
GrabCut
1999 studio album by Method Man & Redman
debut studio album by American hip hop duo Method Man & Redman. It is the first full-length release by Method Man and Redman after many collaborations.
Blackout! (Method Man & Redman album)
Blackout!_(Method_Man_&_Redman_album)
American singer (1963–1996)
high school friend David Lourim to lend her voice to his music project, Method Actor. This brought her to Black Pond Studios, where she met recording engineer
Eva_Cassidy
Archaeological site near Cairo, Egypt
feasibility of the different proposed methods by which the stones were conveyed and placed. One likely method of transportation involved placing large
Giza_pyramid_complex
Techniques used by historians
possibility, of a sound historical method is raised within the sub-field of epistemology. The study of historical method and of different ways of writing
Historical_method
Volunteer-run lightning detection network
stations. The data is processed by various websites using geoinformatics methods and made available on the Internet as a map display. The goal of Blitzortung
Blitzortung
BACKGROUND FIELD-METHOD
BACKGROUND FIELD-METHOD
Boy/Male
Australian, British, English
A Field
Boy/Male
Anglo, British, English
Field with Ferns; Fern Field
Girl/Female
Hebrew
Flowering field.
Boy/Male
English
Gathering field; meeting field.
Boy/Male
Anglo, British, English
Field with Ferns; Fern Field
Surname or Lastname
English
English : variant of Field.
Boy/Male
English
Pasture; field.
Girl/Female
Tamil
Hay field
Surname or Lastname
English
English : topographic name for someone who lived on land which had been cleared of forest, but not brought into cultivation, from Old English feld ‘pasture’, ‘open country’, as opposed on the one hand to æcer ‘cultivated soil’, ‘enclosed land’ (see Acker) and on the other to weald ‘wooded land’, ‘forest’ (see Wald).Possibly also Scottish or Irish : reduced form of McField (see McPhail).Jewish (American) : Americanized and shortened form of any of the many Jewish surnames containing Feld.
Boy/Male
English
Fern field.
Surname or Lastname
English
English : topographic name from Middle English feldes, plural or possessive of feld ‘open country’. This name is also found as a translation of equivalent names in other languages, in particular French Deschamps, Duchamp.
Girl/Female
Japanese American
Valley field.
Boy/Male
English
Pasture; field.
Girl/Female
Indian
Hay field
Boy/Male
Indian, Telugu
A Man with Rich Background
Boy/Male
British, English
Fern Field
Boy/Male
English
Fern field.
Boy/Male
African, American, Anglo, Australian, British, Christian, English, Jamaican
Battlefield; Spear Field; Triangular Field
Girl/Female
Hebrew
Flowering field.
Boy/Male
English
In the field.
BACKGROUND FIELD-METHOD
BACKGROUND FIELD-METHOD
Surname or Lastname
English and French
English and French : nickname from Middle English, Old French co(u)sin, cusin (Latin consobrinus), which in the Middle Ages, as in Shakespearean English, had the general meaning ‘relative’, ‘kinsman’. The surname would thus have denoted a person related in some way to a prominent figure in the neighborhood. In some cases it may also have been a nickname for someone who used the term ‘cousin’ frequently as a familiar term of address. The old slang word cozen ‘cheat’, perhaps derives from the medieval confidence trickster’s use of the word cousin as a term of address to invoke a spurious familiarity. The patronymics constitute the most frequent forms of this name.
Male
Hebrew
Variant spelling of Hebrew Yuwbal, YUVAL means "river, stream."Â
Girl/Female
Arabic, Muslim
Attractive; Fascinating; Beautiful
Boy/Male
Portuguese Spanish American
Prosperous guardian.
Girl/Female
Finnish
Girl/Female
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Sindhi
World
Male
Greek
(ΚλεόπατÏος) Masculine form of Greek Kleopatra, KLEOPATROS means "glory of the father."
Female
English
Pet form of English Elizabeth, IZZY means "God is my oath." Compare with masculine Izzy.Â
Boy/Male
Hindu, Indian, Sanskrit
Strifes to Triumph
Surname or Lastname
English
English : patronymic from Robin.
BACKGROUND FIELD-METHOD
BACKGROUND FIELD-METHOD
BACKGROUND FIELD-METHOD
BACKGROUND FIELD-METHOD
BACKGROUND FIELD-METHOD
n.
Anything behind, serving as a foil; as, the statue had a background of red hangings.
p. pr. & vb. n.
of Field
a.
Open, like a field.
v. t.
To permit; to grant; as, to yield passage.
n.
A lava field.
a.
Relating to an open fields; drowing in a field; growing in a field, or open ground.
n.
Ground in the rear or behind, or in the distance, as opposed to the foreground, or the ground in front.
n.
The space which is behind and subordinate to a portrait or group of figures.
v. i.
To take the field.
n.
A fruitful field.
v. i.
To give way; to cease opposition; to be no longer a hindrance or an obstacle; as, men readily yield to the current of opinion, or to customs; the door yielded.
n.
A place in obscurity or retirement, or out of sight.
v. i.
To give place, as inferior in rank or excellence; as, they will yield to us in nothing.
n.
The whole surface of an escutcheon; also, so much of it is shown unconcealed by the different bearings upon it. See Illust. of Fess, where the field is represented as gules (red), while the fess is argent (silver).
v. t.
To use with full command or power, as a thing not too heavy for the holder; to manage; to handle; hence, to use or employ; as, to wield a sword; to wield the scepter.
v. i.
To stand out in the field, ready to catch, stop, or throw the ball.
n.
That part of a picture between the foreground and the background.
n.
A field.
adv.
To, in, or on the field.
imp. & p. p.
of Field