• Jan Ambjørn
  Jan Ambjørn
  Jan Ambjørn is a Danish physicist regarded as the primary founder of Causal Dynamical Triangulation Theory .Ambjørn began in the early 1990s searching for a physics model that bonded quantum mechanics and relativistic gravity in a way that didn't require supersymmetry...
  
  : Expert on dynamical triangulations who helped develop the causal dynamical triangulations approach to quantum gravity.
• Giovanni Amelino-Camelia
  Giovanni Amelino-Camelia
  Giovanni Amelino-Camelia is an Italian physicist of the University of Rome La Sapienza who works on quantum gravity.He is the first proposer of Doubly special relativity that is the idea of introducing the Planck length in physics as an observer-independent quantity, obtaining a relativistic theory...
  
  : Physicist who developed the idea of Doubly special relativity, and founded Quantum-Gravity phenomenology.
• Abhay Ashtekar
  Abhay Ashtekar
  Abhay Vasant Ashtekar is an Indian theoretical physicist. He is the Eberly Professor of Physics and the Director of the Institute for Gravitational Physics and Geometry at Pennsylvania State University. As the creator of Ashtekar variables, he is one of the founders of loop quantum gravity and its...
  
  : Inventor of the Ashtekar variables, one of the founders of loop quantum gravity.
• John Baez: Mathematical physicist who introduced the notion of spin foam
  Spin foam
  In physics, a spin foam is a topological structure made out of two-dimensional faces that represents one of the configurations that must be summed to obtain a Feynman's path integral description of quantum gravity...
  
   in loop quantum gravity (a term originally introduced by Wheeler
  John Archibald Wheeler
  John Archibald Wheeler was an American theoretical physicist who was largely responsible for reviving interest in general relativity in the United States after World War II. Wheeler also worked with Niels Bohr in explaining the basic principles behind nuclear fission...
  
  ).
• John W. Barrett
  John W. Barrett
  John W. Barrett is professor of mathematical physics at the University of Nottingham. He is a quantum gravity researcher who is well-known for the Barrett-Crane model of quantum gravity.-Not to be confused with:...
  
  : Mathematical physicist who helped develop the Barrett-Crane model
  Barrett-Crane model
  The Barrett–Crane model is a model in quantum gravity which was defined using the Plebanski action.The B field in the action is supposed to be a so-valued 2-form, i.e. taking values in the Lie algebra of a special orthogonal group. The term...
  
   of quantum gravity.
• Julian Barbour
  Julian Barbour
  Julian Barbour is a British physicist with research interests in quantum gravity and the history of science.Since receiving his Ph.D. degree on the foundations of Einstein's general theory of relativity at the University of Cologne in 1968, Barbour has supported himself and his family without an...
  
  : Philosopher and author of The End of Time, Absolute or Relative Motion?: The Discovery of Dynamics.
• Martin Bojowald
  Martin Bojowald
  Martin Bojowald is a German physicist who now works on the faculty of the Penn State Physics Department, where he is a member of the Institute for Gravitation and the Cosmos. Prior to joining Penn State he spent several years at the Max-Planck Institute for Gravitational Physics in Potsdam, Germany...
  
  : Physicist who developed the application of loop quantum gravity to cosmology
  Physical cosmology
  Physical cosmology, as a branch of astronomy, is the study of the largest-scale structures and dynamics of the universe and is concerned with fundamental questions about its formation and evolution. For most of human history, it was a branch of metaphysics and religion...
  
  .
• Steve Carlip
  Steve Carlip
  Steve Carlip is an American professor of physics at the University of California, Davis. He is known for his work on -dimensional quantum gravity, the quantum gravitational basis of black hole thermodynamics, and causal dynamical triangulations. Carlip graduated from Harvard University with a...
  
  : Expert on 3-dimensional quantum gravity.
• Louis Crane: Mathematician who helped develop the Barrett-Crane model
  Barrett-Crane model
  The Barrett–Crane model is a model in quantum gravity which was defined using the Plebanski action.The B field in the action is supposed to be a so-valued 2-form, i.e. taking values in the Lie algebra of a special orthogonal group. The term...
  
   of quantum gravity.
• Fay Dowker
  Fay Dowker
  Helen Fay Dowker is a British Theoretical Physicist at Imperial College London.As a student, she was interested in wormholes and quantum cosmology...
  
  : Physicist working on causal sets
  Causal sets
  The causal sets programme is an approach to quantum gravity. Its founding principle is that spacetime is fundamentally discrete and that the spacetime events are related by a partial order...
  
   as well as the interpretation of quantum mechanics
  Interpretation of quantum mechanics
  An interpretation of quantum mechanics is a set of statements which attempt to explain how quantum mechanics informs our understanding of nature. Although quantum mechanics has held up to rigorous and thorough experimental testing, many of these experiments are open to different interpretations...
  
  .
• David Finkelstein
  David Finkelstein
  David Ritz Finkelstein is currently an emeritus professor of physics at the Georgia Institute of Technology. Finkelstein obtained his Ph.D. in physics at the Massachusetts Institute of Technology in 1953. From 1964 to 1976, he was professor of physics at Yeshiva University.In 1958 Charles W...
  
  : Physicist who has contributed much quantum relativity and the logical foundations of QR.
• Charles Francis: Mathematician who has developed a background-independent model of physics called Relational Quantum Gravity.
• Rodolfo Gambini
  Rodolfo Gambini
  Rodolfo Gambini is a physicist and of the Universidad de la Republica in Montevideo, Uruguay and a visiting professor at the Horace Hearne Institute for Theoretical Physics at the Louisiana State University....
  
  : Physicist who helped introduce loop quantum gravity; coauthor of Loops, Knots, Gauge Theories and Quantum Gravity.
• Gary Gibbons
  Gary Gibbons
  Gary William Gibbons , FRS, is a British theoretical physicist. Gibbons studied in Cambridge,where in 1969 he became a research student under the supervision of Dennis Sciama. When Sciama moved to Oxford, he became a student of Stephen Hawking, obtaining his PhD from Cambridge in 1973...
  
  : Physicist who has done important work on black holes.
• Brian Greene
  Brian Greene
  Brian Greene is an American theoretical physicist and string theorist. He has been a professor at Columbia University since 1996. Greene has worked on mirror symmetry, relating two different Calabi-Yau manifolds...
  
  : Physicist who is considered one of the world's foremost string theorists.
• James Hartle
  James Hartle
  James Burkett Hartle is an American physicist. He has been a professor of physics at the University of California, Santa Barbara since 1966, and he is currently a member of the external faculty of the Santa Fe Institute...
  
  : Physicist who helped develop the Hartle-Hawking wavefunction for the universe.
• Stephen Hawking
  Stephen Hawking
  Stephen William Hawking, CH, CBE, FRS, FRSA is an English theoretical physicist and cosmologist, whose scientific books and public appearances have made him an academic celebrity...
  
  : Leading physicist, expert on black holes and discoverer of Hawking radiation
  Hawking radiation
  Hawking radiation is a thermal radiation with a black body spectrum predicted to be emitted by black holes due to quantum effects. It is named after the physicist Stephen Hawking, who provided a theoretical argument for its existence in 1974, and sometimes also after the physicist Jacob Bekenstein...
  
   who helped develop the Hartle-Hawking wavefunction for the universe.
• Friedrich W. Hehl: Physicist who developed the metric-affine gauge theory of gravity and published a Physics Reports
  Physics Reports
  Physics Reports is a scientific journal, a review section of Physics Letters, published by Elsevier since 1971.Physics Reports publishes literature on specialized topics on physics, which are usually shorter than a monograph, oriented to physicists in all disciplines...
  
   review article about this subject.
• Christopher Isham
  Christopher Isham
  Christopher Isham is a theoretical physicist at Imperial College London. His main research interests are quantum gravity and foundational studies in quantum theory. He was the inventor of an approach to temporal quantum logic called the HPO formalism, and has worked on loop quantum gravity and...
  
  : Physicist who focuses on conceptual problems in quantum gravity.
• Mark Israelit Physicist who worked on torsional Weyl-Dirac electrodynamics, quantum gravity and quantum cosmology (cosmic egg model, together with Nathan Rosen
  Nathan Rosen
  Nathan Rosen was an American-Israeli physicist noted for his study on the structure of the hydrogen molecule and his work with Albert Einstein and Boris Podolsky on entangled wave functions and the EPR paradox.-Background:Nathan Rosen was born into a Jewish family in Brooklyn, New York...
  
  ).
• Ted Jacobson: Physicist who helped develop loop quantum gravity.
• John Klauder: Physicist. Proponent of the theory called Affine Quantum Gravity.
• Renate Loll
  Renate Loll
  Renate Loll is a physicist who works at the , The Netherlands. She received her Ph.D. from , London, in 1989. In 2001 she joined the permanent staff of the ITP, after spending several years at the Max Planck Institute for Gravitational Physics in Golm, Germany...
  
  : Physicist who worked on loop quantum gravity and more recently helped develop the causal dynamical triangulations approach to quantum gravity.
• Robert B. Mann: Physicist who works on "Lineal" gravity i.e. gravity in lower dimensions and alternate theories within quantum field theory.
• Fotini Markopoulou-Kalamara
  Fotini Markopoulou-Kalamara
  Fotini G. Markopoulou-Kalamara is a Greek theoretical physicist interested in foundational mathematics and quantum mechanics. She is a faculty member at Perimeter Institute for Theoretical Physics and is an adjunct professor at the University of Waterloo.Markopoulou received her Ph.D...
  
  : Physicist who works on loop quantum gravity
  Loop quantum gravity
  Loop quantum gravity , also known as loop gravity and quantum geometry, is a proposed quantum theory of spacetime which attempts to reconcile the theories of quantum mechanics and general relativity...
  
   and spin network
  Spin network
  In physics, a spin network is a type of diagram which can be used to represent states and interactions between particles and fields in quantum mechanics. From a mathematical perspective, the diagrams are a concise way to represent multilinear functions and functions between representations of...
  
   models that take causality into account.
• Herman Nicolai: Physicist who works on quantum gravity
  Quantum gravity
  Quantum gravity is the field of theoretical physics which attempts to develop scientific models that unify quantum mechanics with general relativity...
  
   and investigates Kac-Moody algebras as a candidate symmetry for supergravity
  Supergravity
  In theoretical physics, supergravity is a field theory that combines the principles of supersymmetry and general relativity. Together, these imply that, in supergravity, the supersymmetry is a local symmetry...
  
   theories and M-theory
  M-theory
  In theoretical physics, M-theory is an extension of string theory in which 11 dimensions are identified. Because the dimensionality exceeds that of superstring theories in 10 dimensions, proponents believe that the 11-dimensional theory unites all five string theories...
  
  .
• Roger Penrose
  Roger Penrose
  Sir Roger Penrose OM FRS is an English mathematical physicist and Emeritus Rouse Ball Professor of Mathematics at the Mathematical Institute, University of Oxford and Emeritus Fellow of Wadham College...
  
  : Mathematical physicist who invented spin network
  Spin network
  In physics, a spin network is a type of diagram which can be used to represent states and interactions between particles and fields in quantum mechanics. From a mathematical perspective, the diagrams are a concise way to represent multilinear functions and functions between representations of...
  
  s and twistor theory.
• Jorge Pullin
  Jorge Pullin
  Jorge Pullin is the Horace Hearne Chair in theoretical Physics at the Louisiana State University, known for his work on black hole collisions and quantum gravity.-Biography:...
  
  : Physicist who helped develop loop quantum gravity
  Loop quantum gravity
  Loop quantum gravity , also known as loop gravity and quantum geometry, is a proposed quantum theory of spacetime which attempts to reconcile the theories of quantum mechanics and general relativity...
  
  , coauthor of Loops, Knots, Gauge Theories and Quantum Gravity.
• Carlo Rovelli
  Carlo Rovelli
  Carlo Rovelli is an Italian physicist who has worked in Italy, the USA, and France. His work is mainly in the field of quantum gravity. He is among the founders of the Loop Quantum Gravity theory.-Life and career:...
  
  : One of the founders and major contributors to loop quantum gravity
  Loop quantum gravity
  Loop quantum gravity , also known as loop gravity and quantum geometry, is a proposed quantum theory of spacetime which attempts to reconcile the theories of quantum mechanics and general relativity...
  
  .
• Lee Smolin
  Lee Smolin
  Lee Smolin is an American theoretical physicist, a researcher at the Perimeter Institute for Theoretical Physics, and an adjunct professor of physics at the University of Waterloo. He is married to Dina Graser, a communications lawyer in Toronto. His brother is David M...
  
  : One of the founders and major contributors to loop quantum gravity
  Loop quantum gravity
  Loop quantum gravity , also known as loop gravity and quantum geometry, is a proposed quantum theory of spacetime which attempts to reconcile the theories of quantum mechanics and general relativity...
  
  .
• Rafael Sorkin
  Rafael Sorkin
  Rafael Dolnick Sorkin is an American physicist. He is professor emeritus of physics at Syracuse University and the Perimeter Institute for Theoretical Physics, and a Fellow of the American Physical Society...
  
  : Physicist, primary proponent of the causal set approach to quantum gravity.
• Andrew Strominger
  Andrew Strominger
  Andrew Eben Strominger is an American theoretical physicist who works on string theory and son of Jack L. Strominger. He is currently a professor at Harvard University and a senior fellow at the Society of Fellows...
  
  : Physicist who works on string theory
  String theory
  String theory is an active research framework in particle physics that attempts to reconcile quantum mechanics and general relativity. It is a contender for a theory of everything , a manner of describing the known fundamental forces and matter in a mathematically complete system...
  
  .
• Thomas Thiemann: Physicist who works on loop quantum gravity
  Loop quantum gravity
  Loop quantum gravity , also known as loop gravity and quantum geometry, is a proposed quantum theory of spacetime which attempts to reconcile the theories of quantum mechanics and general relativity...
  
  .
• Frank J. Tipler
  Frank J. Tipler
  Frank Jennings Tipler is a mathematical physicist and cosmologist, holding a joint appointment in the Departments of Mathematics and Physics at Tulane University. Tipler has authored books and papers on the Omega Point, which he claims is a mechanism for the resurrection of the dead. It has been...
  
  : Mathematical physicist who incorporates quantum gravity into his ideas of a Judeo-Christian God.
• Bill Unruh
  Bill Unruh
  William George Unruh is a Canadian physicist at the University of British Columbia, Vancouver, who discovered the Unruh effect. Unruh was born in Winnipeg, Manitoba. He obtained his B.Sc. from the University of Manitoba in 1967, followed by an M.A. and Ph.D...
  
  : Canadian physicist engaged in the study of semiclassical gravity
  Semiclassical gravity
  Semiclassical gravity is the approximation to the theory of quantum gravity in which one treats matter fields as being quantum and the gravitational field as being classical....
  
   and responsible for the discovery of the so-called Unruh effect
  Unruh effect
  The Unruh effect , was first described by Stephen Fulling in 1973, Paul Davies in 1975 and Bill Unruh in 1976. It is the prediction that an accelerating observer will observe black-body radiation where an inertial observer would observe none...
  
  .
• Cumrun Vafa
  Cumrun Vafa
  Cumrun Vafa is an Iranian-American leading string theorist from Harvard University where he started as a Harvard Junior Fellow. He is a recipient of the 2008 Dirac Medal.-Birth and education:...
  
  : Leading physicist,Developer of F-Theory
  F-theory
  F-theory is a branch of string theory developed by Cumrun Vafa. The new vacua described as F-theory were discovered by Vafa, and it also allowed string theorists to construct new realistic vacua — in the form of F-theory compactified on elliptically fibered Calabi-Yau four-folds...
  
  , Known for Vafa-Witten theorem
  Vafa-Witten theorem
  In theoretical physics, the Vafa–Witten theorem, named after Cumrun Vafa and Edward Witten, is a theorem that shows that vector-like global symmetries such as isospin and baryon number cannot be spontanteously broken as long as the theta angle is zero.-References:...
  
   and Gopakumar-Vafa conjecture.
• Robert Wald
  Robert Wald
  Robert M. Wald is a physicist who specializes in general relativity and the thermodynamics of black holes. He is well known as the author of a widely used graduate textbook, General Relativity . Wald is a professor at the Enrico Fermi Institute and the University of Chicago...
  
  : Leading physicist in the field of quantum field theory in curved spacetime
  Quantum field theory in curved spacetime
  Quantum field theory in curved spacetime is an extension of standard, Minkowski-space quantum field theory to curved spacetime. A general prediction of this theory is that particles can be created by time dependent gravitational fields , or by time independent gravitational fields that contain...
  
  .
• Anzhong Wang
  Anzhong Wang
  Anzhong Wang is a theoretical physicist, specialized in gravitation, cosmology and astroparticle physics. He is on the Physics faculty of Baylor University...
  
  : Physicist, major contributor to Horava-Lifshitz gravity; String theory and applications to cosmology.
• Peter C. West: Theoretical physicist, major contributions to supergravity and conjectured the E11 Kac-Moody symmetry of M-theory.
• Edward Witten
  Edward Witten
  Edward Witten is an American theoretical physicist with a focus on mathematical physics who is currently a professor of Mathematical Physics at the Institute for Advanced Study....
  
  : Leading mathematical physicist, does research in string theory
  String theory
  String theory is an active research framework in particle physics that attempts to reconcile quantum mechanics and general relativity. It is a contender for a theory of everything , a manner of describing the known fundamental forces and matter in a mathematically complete system...
  
   and M-theory
  M-theory
  In theoretical physics, M-theory is an extension of string theory in which 11 dimensions are identified. Because the dimensionality exceeds that of superstring theories in 10 dimensions, proponents believe that the 11-dimensional theory unites all five string theories...
  
  .
• Richard Woodard: Physicist, major contributor to canonical, perturbative, and finite infrared quantum gravity; applications to cosmology.

See also

• List of loop quantum gravity researchers
• List of string theorists