Results 11 to 20 of about 66,310 (247)

Testing fundamental physics with photon frequency shift

European Physical Journal C: Particles and Fields, 2020
We propose a high precision satellite experiment to further test Einstein’s General Relativity and constrain extended theories of gravity. We consider the frequency shift of a photon radially exchanged between two observers located on Earth and on a ...
Luca Buoninfante, Gaetano Lambiase, Antonio Stabile   +2 more
doaj   +1 more source

A naturally regularized path integral formalism

European Physical Journal C: Particles and Fields, 2019
A minimal uncertainty in position measurement comes into play if, for instance, one incorporates gravitational interaction of photon and electron in the Heisenberg’s Electron Microscope Gedanken Experiment.
Kourosh Nozari, M. Hajebrahimi, M. Khodadi, A. Etemadi   +3 more
doaj   +1 more source

OPTIS - a satellite-based test of Special and General Relativity [PDF]

, 2001
A new satellite based test of Special and General Relativity is proposed. For the Michelson-Morley experiment we expect an improvement of at least three orders of magnitude, and for the Kennedy-Thorndike experiment an improvement of more than one order ...
, Achim Peters, Buchman S, Claus Lämmerzahl, Damour T, Damour T, Damour T, Ellis J, Hansjörg Dittus, Mansouri R, Mansouri R, Mansouri R, Stephan Schiller, Storz R, Touboul P   +14 more
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Thomas-Fermi Model in the Presence of Natural Cutoffs

Advances in High Energy Physics, 2014
It has been revealed, in the context of quantum gravity candidates, that measurement of position cannot be done with arbitrary precision and there is a finite resolution of space-time points.
Kourosh Nozari, Z. Haghani, J. Vahedi
doaj   +1 more source

Foundations of Quantum Gravity : The Role of Principles Grounded in Empirical Reality [PDF]

, 2014
When attempting to assess the strengths and weaknesses of various principles in their potential role of guiding the formulation of a theory of quantum gravity, it is crucial to distinguish between principles which are strongly supported by empirical data
Holman, M.
core   +1 more source

Causality and the speed of sound [PDF]

, 2007
A usual causal requirement on a viable theory of matter is that the speed of sound be at most the speed of light. In view of various recent papers querying this limit, the question is revisited here.
A. Ranfagni, B.A. Bassett, F. Cardone, G. Caporaso, G.F.R. Ellis, George F. R. Ellis, H. Ringermacher, J. Garriga, J.K. Erickson, M.A. Ruderman, Malcolm A. H. MacCallum, N.R. Bigelow, R. Wald, Roy Maartens, S.A. Bludman, S.W. Hawking, V. Moncrief, Ya.B. Zeldovich   +17 more
core   +2 more sources

Recent Experimental Tests of Special Relativity

, 2005
We review our recent Michelson-Morley (MM) and Kennedy-Thorndike (KT) experiment, which tests Lorentz invariance in the photon sector, and report first results of our ongoing atomic clock test of Lorentz invariance in the matter sector.
A. Bauch, A. Brillet, A. Einstein, A.A. Michelson, A.P. Lightman, A.V. Kostelecky, C. Braxmaier, C. Salomon, D. Bear, D. Colladay, D. Colladay, D. Hils, D.F. Phillips, D.J. Fixsen, F. Cané, G. Saathoff, H. Marion, H. Müller, H. Müller, H. Müller, H.E. Ives, H.P. Robertson, Kostelecky, L. Blanchet, L.-S. Hou, Lubin, M.E. Tobar, M.E. Tobar, P. Wolf, P. Wolf, P. Wolf, P. Wolf, R. Bluhm, R. Gambini, R. Mansouri, R.J. Kennedy, S. Bize, T. Damour, T.E. Parker, V.A. Kostelecky, V.A. Kostelecky, W.-T. Ni   +41 more
core   +3 more sources

On the Status of the Geodesic Principle in Newtonian and Relativistic Physics [PDF]

, 2011
A theorem due to Bob Geroch and Pong Soo Jang ["Motion of a Body in General Relativity." Journal of Mathematical Physics 16(1), (1975)] provides a sense in which the geodesic principle has the status of a theorem in General Relativity (GR).
Weatherall, James Owen
core   +2 more sources

Overlooked effects of wavefront reception with or without speed limit, from aberration to time measurement

Results in Optics
A general approach to wavefront reception applicable to any type of wave allows to point out some overlooked aspects and ignored consequences of established theories.
Denis Michel
doaj   +1 more source

Was Einstein Right? Testing Relativity at the Centenary

, 2005
We review the experimental evidence for Einstein's special and general relativity. A variety of high precision null experiments verify the weak equivalence principle and local Lorentz invariance, while gravitational redshift and other clock experiments ...
Adelberger, Alväger, Baessler, Bailes, Barish, Bauch, Berti, Bertotti, Bize, Braginsky, Brecher, Brillet, Champeney, Chiaverini, Chupp, Ciufolini, Colladay, Colladay, Cutler, Damour, Drever, Esposito-Farèse, Eötvös, Farley, Fischer, Gabriel, Godone, Haugan, Hoyle, Hoyle, Hughes, Ives, Jacobson, Jaseja, Kostelecký, Kramer, Krisher, Lamoreaux, Lightman, Long, Long, Lyne, Marion, Martins, Mattingly, Michelson, Milani, Niebauer, Peik, Prestage, Prestage, Riis, Roll, Rossi, Shankland, Shapiro, Stairs, Talmadge, Thorne, Turneaure, Turyshev, Uzan, Vessot, Visser, Weisberg, Will, Will, Will, Will, Will, Williams, Williams   +71 more
core   +2 more sources