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Indian-American theoretical physicist
Abhay Ashtekar (born July 5, 1949) is an Indian-American theoretical physicist known for his work on general relativity, quantum gravity, and cosmology
Abhay_Ashtekar
Variables used in general relativity
the metric canonical coordinates. In 1986 Abhay Ashtekar introduced a new set of canonical variables, Ashtekar (new) variables to represent an unusual way
Ashtekar_variables
Topics referred to by the same term
Lanka Abhayapuri, a town in Assam Abhay Ashtekar (born 1949), professor of physics at Pennsylvania State University Abhay Bharadwaj (1954–2020), Indian politician
Abhay
American mathematical physicist (b. 1942)
theory in mathematics and physics. He was the Ph.D. supervisor for Abhay Ashtekar, Basilis Xanthopoulos and Gary Horowitz. He also proved an important
Robert_Geroch
Theory of quantum gravity merging quantum mechanics and general relativity
of contraction, which has been described as the Big Crunch. In 1986, Abhay Ashtekar reformulated Einstein's general relativity in a language closer to that
Loop_quantum_gravity
Local description of black hole horizons
first by Sean Hayward and the 3+1 formulation developed by Abhay Ashtekar and others (see Ashtekar & Krishnan 2004). It provides a description of a black
Dynamical_horizon
Model for the origin of the universe
discovered in February 2006 for isotropic and homogeneous models by Abhay Ashtekar, Tomasz Pawlowski, and Parampreet Singh at Pennsylvania State University
Big_Bounce
Notation in general relativity
83(11): 1073-1099. [arxiv.org/abs/gr-qc/0508107 arXiv:gr-qc/0508107v2] Abhay Ashtekar, Christopher Beetle, Jerzy Lewandowski. Geometry of generic isolated
Newman–Penrose_formalism
Constraint in loop quantum gravity
from any such specific constraint. In 1986 Abhay Ashtekar introduced a new set of canonical variables, Ashtekar variables to represent an unusual way of
Hamiltonian_constraint_of_LQG
Finite, symmetry-reduced model of loop quantum gravity
in 1999 by Martin Bojowald, and further developed in particular by Abhay Ashtekar and Jerzy Lewandowski, as well as Tomasz Pawłowski and Parampreet Singh
Loop_quantum_cosmology
Aspect of astrophysics history
work he indicated this as some lambda variable). In 1986–87, physicist Abhay Ashtekar completed the project which Amitabha Sen began. He clearly identified
History of loop quantum gravity
History_of_loop_quantum_gravity
physicist Donna Arzt – attorney and legal scholar Abhay Ashtekar – theoretical physicist and creator of the Ashtekar variables for quantum gravity; member of the
List of Syracuse University people
List_of_Syracuse_University_people
Key constraint in some theories admitting Hamiltonian formulations
any such specific constraint. In 1986, Abhay Ashtekar introduced a new set of canonical variables, the Ashtekar variables, to represent an unusual way
Hamiltonian_constraint
(born 1949) John C. Collins (born 1949) R. Keith Ellis (born 1949) Abhay Ashtekar (born 1949) Shing-Tung Yau (born 1949) Pierre Fayet (born 1949) Pierre
List of theoretical physicists
List_of_theoretical_physicists
List of scientists from India
(1948–2017 CE) Thirumalachari Ramasami, leather scientist (1948–present CE) Abhay Ashtekar, theoritical physicist (1949–present CE) Jyeshtharaj Joshi, chemist
List_of_Indian_scientists
Society Raghunath Anant Mashelkar Subhash Khot Theoretical physicists Abhay Ashtekar Atish Dabholkar Rohini Godbole Astro - physicists Jayant Narlikar Amol
List_of_Marathi_people
first Swedish Nobel Prize winner. Abhay Ashtekar (1949–): Indian theoretical physicist. As the creator of Ashtekar variables, he is one of the founders
List of atheists in science and technology
List_of_atheists_in_science_and_technology
1973 treatise by Hawking and Ellis
(2023). The large scale structure of space-time. George F. R. Ellis, Abhay Ashtekar (50th anniversary ed.). Cambridge, United Kingdom. ISBN 978-1-009-25316-1
The Large Scale Structure of Space-Time
The_Large_Scale_Structure_of_Space-Time
Academic journal
former editors include George Francis Rayner Ellis, Hermann Nicolai, Abhay Ashtekar, and Roy Maartens. The journal's field of interest is modern gravitational
General Relativity and Gravitation
General_Relativity_and_Gravitation
professor of law at the University of California, Davis School of Law Abhay Ashtekar, professor of physics and Director of the Institute for Gravitational
List_of_Indian_Americans
Italian theoretical physicist and writer (born 1956)
Aix-Marseille University in France. In 1988, Rovelli, Lee Smolin and Abhay Ashtekar introduced a theory of quantum gravity called loop quantum gravity.
Carlo_Rovelli
Polish physicist (1959–2024)
With Ashtekar Background independent quantum gravity: a status report, Classical and Quantum Gravity, Band 21, 2004, R 53 Arxiv Abhay Ashtekar, Jerzy
Jerzy_Lewandowski
Gravitational wave observatory unit, india
international advisory committee is chaired by theoretical physicist Abhay Ashtekar and has members from several international as well as Indian research
Indian Initiative in Gravitational-wave Observations
Indian_Initiative_in_Gravitational-wave_Observations
Khare Narendra Karmarkar Shreeram Shankar Abhyankar Shrinivas Kulkarni Abhay Ashtekar Aravind Joshi Subhash Khot Ashok Gadgil Anandi Gopal Joshi T. P. Lahane
List of people from Maharashtra
List_of_people_from_Maharashtra
South African and Canadian physicist (b. 1973)
high energies are extremely far from the capabilities of the LHC. With Abhay Ashtekar and Fethi Ramazanoğlu, he investigated the evaporation of 2D black holes
Frans_Pretorius
Warder Clyde Allee (S.M. 1910, Ph.D. 1912) – zoologist and ecologist Abhay Ashtekar (Ph.D. 1974) – pioneer in the field of loop quantum gravity Zonia Baber
List of University of Chicago alumni
List_of_University_of_Chicago_alumni
Borough in Pennsylvania, US
NFL guard, played two seasons with the Pittsburgh Steelers Others: Abhay Ashtekar – Professor of Physics at Penn State, noted for his contributions in
State_College,_Pennsylvania
Branch of applied mathematics
Herbert Spohn (1946–) John Lawrence Cardy (1947–) Giorgio Parisi (1948-) Abhay Ashtekar (1949-) Edward Witten (1951–) F. Duncan Haldane (1951–) Ashoke Sen (1956–)
Mathematical_physics
Set of mathematical concepts in quantum gravity
United Kingdom: Cambridge University Press. ISBN 978-1-108-47373-6. Ashtekar, Abhay; Corichi, Alejandro; Zapata, José A. (1998), "Quantum theory of geometry
Quantum_geometry
of notable researchers in the physics field of loop quantum gravity. Abhay Ashtekar, Pennsylvania State University, United States John Baez, University
List of loop quantum gravity researchers
List_of_loop_quantum_gravity_researchers
relativity, Alcubierre drives), Richard L. Arnowitt (ADM formalism), Abhay Ashtekar (Ashtekar variables, dynamical horizons) Robert M L Baker, Jr. (high-frequency
List of contributors to general relativity
List_of_contributors_to_general_relativity
American theoretical physicist (born 1955)
in collaborative work with Ted Jacobson, Carlo Rovelli, Louis Crane, Abhay Ashtekar and others. LQG is an approach to the unification of quantum mechanics
Lee_Smolin
Research organization
Penrose (Nobel Prize in Physics, 2020), who won in 1975, physicist Abhay Ashtekar, who won in 1977, and astrophysicist and Nobel laureate George Smoot
Gravity_Research_Foundation
German physicist
2001 from the Pennsylvania State University under the direction of Abhay Ashtekar. Subsequently, he has held a postdoctoral fellowship at the Perimeter
Olaf_Dreyer
work modeling Earth’s climate. Abhay Ashtekar (born 5 July 1949) is an Indian theoretical physicist who created Ashtekar variables and is one of the founders
Asian Americans in science and technology
Asian_Americans_in_science_and_technology
Description of gravity using discrete values
gravity". arXiv:gr-qc/0006061. (verify against ISBN 9789812777386) Ashtekar, Abhay (2007). Loop Quantum Gravity: Four Recent Advances and a Dozen Frequently
Quantum_gravity
German physicist
Competition, 2003 List of loop quantum gravity researchers Big Bounce Abhay Ashtekar "PennState". Retrieved 2011-02-04. "PennState Gravitation & the Cosmos"
Martin_Bojowald
American mathematician (born 1956)
although much of his dissertation research was done in collaboration with Abhay Ashtekar. The context of his dissertation, titled The Asymptotic Structure of
Tevian_Dray
German physicist
Stewart and Bernd Schmidt, as well as visiting scientists including Abhay Ashtekar, Demetrios Christodoulou and Brandon Carter. One of Ehlers' postdoctoral
Jürgen_Ehlers
Learned society
Israel (1998–2001), Robert Wald (2001–04), Clifford Will (2004–07), Abhay Ashtekar (2007–10), Malcolm A. H. MacCallum (2010–13), Gary Horowitz (2013–16)
International Society on General Relativity and Gravitation
International_Society_on_General_Relativity_and_Gravitation
Operator whose expectation value gives the volume
and Volume in Quantum Gravity", Nuclear Physics B 442, 593 (1995). Abhay Ashtekar and Jerzy Lewandowski, Quantum Theory of Geometry II: Volume operators
Volume_operator
Italian theoretical physicist
with numerical relativity simulations to within a few per cent. With Abhay Ashtekar he wrote a review of loop quantum gravity for Reports on Progress in
Eugenio_Bianchi
German physicist and historian
184R. doi:10.1126/science.275.5297.184. PMID 8985006. S2CID 43449111. Abhay Ashtekar; Robert Cohen; Don Howard; Jürgen Renn; Sahotra Sarkar; Abner Shimony
Tilman_Sauer
Region in spacetime from which nothing can escape
Archived from the original on 17 May 2019. Retrieved 11 March 2018. Ashtekar, Abhay; Krishnan, Badri (2004). "Isolated and dynamical horizons and their
Event_horizon
Components of Ricci tensors
Concepts and New Developments. Berlin: Springer, 1998. Appendix E. Abhay Ashtekar, Stephen Fairhurst, Badri Krishnan. Isolated horizons: Hamiltonian evolution
Ricci scalars (Newman–Penrose formalism)
Ricci_scalars_(Newman–Penrose_formalism)
French mathematical physicist
Hugo Duminil-Copin, Misha Gromov, Abhay Ashtekar, Carlo Rovelli, Jeremy Butterfield, Jean-Pierre Luminet, Abhay Ashtekar, Alicia Dickenstein, Jean-Pierre
Joseph_Kouneiher
Indian physicist (1938–2017)
(1999)) contains essays contributed by Roger Penrose, Jacob Bekenstein, Abhay Ashtekar, Ashoke Sen etc. As founder-director of the Planetarium in Bangalore
C._V._Vishveshwara
Indian-American physicist (1927–2022)
Levin, George Packer, Ian Shipsey, Arthur Zajonc Diane Ackerman, and Abhay Ashtekar. Wali married Kashi Kulkarni in May 1952. She was a fellow student at
Kameshwar_C._Wali
Award
www.aps.org. Retrieved 2023-10-07. "Einstein Prize Recipient 2019: Abhay Ashtekar". www.aps.org. Retrieved 2023-10-07. "Einstein Prize Recipient 2021:
Einstein_Prize_(APS)
relativity, and founded Quantum-Gravity phenomenology. Abhay Ashtekar: inventor of the Ashtekar variables, one of the founders of loop quantum gravity
List of quantum gravity researchers
List_of_quantum_gravity_researchers
International astrophysics research organization
C. G. Stueckelberg. Invited lectures were delivered by Professors Abhay Ashtekar, Thomas Thiemann, Gerard 't Hooft and Hagen Kleinert. The Zeldovich
ICRANet
nuclear device which was tested & codenamed Smiling Buddha. Abhay Ashtekar – Known for 'Ashtekar Variables'. He is also regarded as a founder of the theory
List of Marathi people in science, engineering and technology
List_of_Marathi_people_in_science,_engineering_and_technology
Generalized Euclidean space in mathematics
p. 94. Kong & Liu 2021, p. 9. Cirelli, Lanzavecchia & Mania 1983. Ashtekar, Abhay; Schilling, Troy A. (1999). "Geometrical Formulation of Quantum Mechanics"
Projective_Hilbert_space
Private primary and secondary school in Maharashtra, India
to do one hour of social service in the local community each week. Abhay Ashtekar – physicist Virdhawal Khade – Olympic swimmer Sujit Minchekar – member
St._Xavier's_School,_Kolhapur
Theory of gravitation as curved spacetime
21R..53A, doi:10.1088/0264-9381/21/15/R01, S2CID 119175535 Ashtekar, Abhay; Magnon-Ashtekar, Anne (1979), "On conserved quantities in general relativity"
General_relativity
Hypothetical scenario for the ultimate fate of the universe
and colleagues". Physics World. 2018-08-21. Retrieved 2022-12-15. Ashtekar, Abhay (30 November 2008). "Loop Quantum Cosmology: An Overview". General
Big_Crunch
Abell 520 Aberdeen Tunnel Underground Laboratory Aberration of light Abhay Ashtekar Ablation Abner Shimony Abol-fath Khazeni About Time (book) Above threshold
Index_of_physics_articles_(A)
Gravitational-wave event
Bibcode:2024EPJC...84..525M. doi:10.1140/epjc/s10052-024-12880-w. Ashtekar, Abhay (April 15, 2015). "The Simplicity of Black Holes". Physics. 8 (15):
GW250114
Type of spacetime horizon
induced connection D {\displaystyle {\mathcal {D}}} on the horizon. Abhay Ashtekar, Christopher Beetle, Olaf Dreyer, et al. "Generic isolated horizons
Non-expanding_horizon
founders of this quantum theory of gravity, together with Lee Smolin and Abhay Ashtekar. The theory is aimed at merging the general relativity with quantum
List of Italian inventions and discoveries
List_of_Italian_inventions_and_discoveries
Government college in Kolhapur
than 125,000 volumes, some of which are rare and out of print books. Abhay Ashtekar, scientist, quantum gravity and cosmology Vishnu Vasudev Narlikar, Indian
Rajaram_College
American physicist
the US at the International Union of Pure and Applied Physics. With Abhay Ashtekar, James A. Isenberg, and Malcolm MacCallum, Berger is co-editor of the
Beverly_Berger
College of Pennsylvania State University
(physicist Erwin Mueller); formulate covariant quantum gravity (physicist Abhay Ashtekar); discover practical synthesis of the pregnancy hormone progesterone
Eberly_College_of_Science
Boundary region of asymptotically flat spacetimes in general relativity
Einstein's Relativity (1st ed.). Clarendon Press. ISBN 978-0198596868. Ashtekar, Abhay (2015). "Geometry and physics of null infinity". Surveys in Differential
Null_infinity
Type of spacetime horizon
Bibcode:2005CaJPh..83.1073B. doi:10.1139/p05-063. ISSN 0008-4204. S2CID 119350115. Ashtekar, Abhay; Beetle, Christopher; Dreyer, Olaf; Fairhurst, Stephen; Krishnan, Badri;
Isolated_horizon
Quantum field theory with a Lie group base manifold
Bibcode:2010EL.....9260008B. doi:10.1209/0295-5075/92/60008. S2CID 119247896. Ashtekar, Abhay; Campiglia, Miguel; Henderson, Adam (2009). "Loop quantum cosmology
Group_field_theory
Condition in which spacetime itself breaks down
1007/JHEP11(2015)105. ISSN 1029-8479. Ashtekar, Abhay (2005). "3: "The nature of spacetime singularities" by Alan D. Randall". In Ashtekar, Abhay (ed.). 100 years of relativity:
Gravitational_singularity
Method of detecting gravitational waves
(2014), "Probing Dynamical Spacetimes with Gravitational Waves", in Ashtekar, Abhay; Petkov, Vesselin (eds.), Springer Handbook of Spacetime, Springer
Ground-based interferometric gravitational-wave search
Ground-based_interferometric_gravitational-wave_search
Matrices used for Lorentz group spinors
& Van der Waerden 1933. Littlewood 1944. Ashtekar 1991. Penrose & Rindler 1984. Gates 1983. Ashtekar, Abhay (1991). Lectures on Non-Perturbative Canonical
Infeld–Van der Waerden symbols
Infeld–Van_der_Waerden_symbols
Hypothetical astrophysical effect
arXiv:astro-ph/0504034. Bibcode:2005tsra.conf...89C, equations 25 & 26. Ashtekar, Abhay (2020). "Black Hole Evaporation: A Perspective from Loop Quantum Gravity"
Hawking_radiation
Facet of general relativity
Wheeler 1973, §20.4 See the review article Szabados 2004. Ashtekar, Abhay; Magnon-Ashtekar, Anne (1979). "On conserved quantities in general relativity"
Mass_in_general_relativity
Numerical coefficient in loop quantum gravity
5507B. doi:10.1103/PhysRevD.51.5507. PMID 10018309. S2CID 16314220. Ashtekar, Abhay; Baez, John; Corichi, Alejandro; Krasnov, Kirill (1998). "Quantum Geometry
Immirzi_parameter
Concept in general relativity and quantum field theory
3288R. doi:10.1103/PhysRevLett.77.3288. PMID 10062183. S2CID 43493308. Ashtekar, Abhay; Baez, John; Corichi, Alejandro; Krasnov, Kirill (1998). "Quantum Geometry
Black_hole_thermodynamics
Measure used in functional analysis
235. Hall 2013, pp. 125, 141. Hall 2013, p. 205. Ashtekar & Schilling 1999, pp. 23–65. Ashtekar, Abhay; Schilling, Troy A. (1999). "Geometrical Formulation
Projection-valued_measure
Theory of forces and subatomic particles
Archived from the original on 4 March 2016. Retrieved 18 August 2016. Ashtekar, Abhay (29 September 2005). "Gravity and the quantum". New Journal of Physics
Standard_Model
Set of five scalars
Concepts and New Developments. Berlin: Springer, 1998. Appendix E. Ashtekar, Abhay; Fairhurst, Stephen; Krishnan, Badri (2000). "Isolated horizons: Hamiltonian
Weyl_scalar
Coordinate system for the Schwarzschild geometry
Miller 1994, pp. 26–27 Ashtekar 2006, p. 97 Mukhanov & Winitzki 2007, pp. 111–112 Misner, Thorne & Wheeler 1973 Ashtekar, Abhay (2006). One Hundred Years
Kruskal–Szekeres_coordinates
Specific quantum state of a quantum harmonic oscillator
doi:10.1088/0305-4470/37/36/004. ISSN 0305-4470. S2CID 119064935. Ashtekar, Abhay; Lewandowski, Jerzy; Marolf, Donald; Mourão, José; Thiemann, Thomas
Coherent_state
Totality of existing entities
2026. Petkov, Vesselin (2014). "8. Physics as Spacetime Geometry". In Ashtekar, Abhay; Petkov, Vesselin (eds.). Springer Handbook of Spacetime. Springer
Reality
General relativity model near spacetime singularities
Bibcode:2001CMaPh.218..479A. doi:10.1007/s002200100406. S2CID 16167683. Ashtekar, Abhay; Henderson, Adam; Sloan, David (2011). "Hamiltonian formulation of
BKL_singularity
Puzzle of disappearance of information in a black hole
1103/PhysRevLett.117.201601. ISSN 0031-9007. PMID 27886509. S2CID 29536476. Ashtekar, Abhay (24 January 2020). "Black Hole Evaporation: A Perspective from Loop
Black hole information paradox
Black_hole_information_paradox
Gravitational-wave detector in Italy
(2014). "Probing Dynamical Spacetimes with Gravitational Waves". In Ashtekar, Abhay; Petkov, Vesselin (eds.). Springer Handbook of Spacetime. Springer
Virgo_interferometer
Yang–Mills theory in two dimensions with a well-defined measure
Bibcode:1987CMaPh.113..389K. doi:10.1007/BF01221253. S2CID 122234042. Ashtekar, Abhay; Lewandowski, Jerzy; Marolf, Donald; Mourão, José; Thiemann, Thomas
Two-dimensional Yang–Mills theory
Two-dimensional_Yang–Mills_theory
Mathematical model of the time dependence of a point in space
Number Theory https://www.math.uzh.ch/gorodnik/dyn_num/index.html Ashtekar, Abhay; Petkov, Vesselin (2014). Springer Handbook of Spacetime. Springer
Dynamical_system
Arthur Ashkin (died 2020) Bell Laboratories, Lucent Technologies 1996 Abhay V. Ashtekar The Pennsylvania State University 2016 Alain Aspect Institut d'Optique
List of members of the National Academy of Sciences (physics)
List_of_members_of_the_National_Academy_of_Sciences_(physics)
Hartmut Zabel George B. Zimmerman Teijo E.W. Aberg Gabriel Aeppli Abhay Vasant Ashtekar Jonathan Anders Bagger Joseph John Barrett Dietrich Wolfgang Bechert
List of fellows of the American Physical Society (1972–1997)
List_of_fellows_of_the_American_Physical_Society_(1972–1997)
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ABHAY ASHTEKAR
ABHAY ASHTEKAR
ABHAY ASHTEKAR
ABHAY ASHTEKAR
ABHAY ASHTEKAR
ABHAY ASHTEKAR
ABHAY ASHTEKAR
ABHAY ASHTEKAR
ABHAY ASHTEKAR
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