Status and prospects for Lorentz invariance and CPT violation tests at KLOE and KLOE-2

2012 ◽  
Author(s):  
Antonio De Santis ◽  
Keyword(s):  
Lorentz Invariance ◽  
Cpt Violation

scholarly journals Constraints on Lorentz invariance and CPT violation using optical photometry and polarimetry of active galaxies BL Lacertae and S5 B0716+714

2019 ◽  
Vol 99 (3) ◽  
Author(s):  
Andrew S. Friedman ◽  
David Leon ◽  
Kevin D. Crowley ◽  
Delwin Johnson ◽  
Grant Teply ◽  
...  
Keyword(s):  
Lorentz Invariance ◽  
Active Galaxies ◽  
Cpt Violation ◽  
Optical Photometry ◽  
Bl Lacertae

scholarly journals CPT violation does not lead to violation of Lorentz invariance and vice versa

2011 ◽  
Vol 699 (3) ◽  
pp. 177-180 ◽  
Author(s):  
Masud Chaichian ◽  
Alexander D. Dolgov ◽  
Victor A. Novikov ◽  
Anca Tureanu
Keyword(s):  
Lorentz Invariance ◽  
Cpt Violation ◽  
Violation Of Lorentz Invariance

scholarly journals Improved constraints on anisotropic birefringent Lorentz invariance and CPT violation from broadband optical polarimetry of high redshift galaxies

2020 ◽  
Vol 102 (4) ◽  
Author(s):  
Andrew S. Friedman ◽  
Roman Gerasimov ◽  
David Leon ◽  
Walker Stevens ◽  
David Tytler ◽  
...  
Keyword(s):  
Lorentz Invariance ◽  
High Redshift ◽  
Cpt Violation ◽  
High Redshift Galaxies ◽  
Redshift Galaxies

Nonlocal Gravity

2017 ◽  
Author(s):  
Bahram Mashhoon
Keyword(s):  
Gravitational Field ◽  
Gravitational Lensing ◽  
Past History ◽  
Lorentz Invariance ◽  
Minkowski Spacetime ◽  
Field Measurements ◽  
Local Principle ◽  
History Of ◽  
Expansion Of The Universe ◽  
Nearby Galaxies

A postulate of locality permeates through the special and general theories of relativity. First, Lorentz invariance is extended in a pointwise manner to actual, namely, accelerated observers in Minkowski spacetime. This hypothesis of locality is then employed crucially in Einstein’s local principle of equivalence to render observers pointwise inertial in a gravitational field. Field measurements are intrinsically nonlocal, however. To go beyond the locality postulate in Minkowski spacetime, the past history of the accelerated observer must be taken into account in accordance with the Bohr-Rosenfeld principle. The observer in general carries the memory of its past acceleration. The deep connection between inertia and gravitation suggests that gravity could be nonlocal as well and in nonlocal gravity the fading gravitational memory of past events must then be taken into account. Along this line of thought, a classical nonlocal generalization of Einstein’s theory of gravitation has recently been developed. In this nonlocal gravity (NLG) theory, the gravitational field is local, but satisfies a partial integro-differential field equation. A significant observational consequence of this theory is that the nonlocal aspect of gravity appears to simulate dark matter. The implications of NLG are explored in this book for gravitational lensing, gravitational radiation, the gravitational physics of the Solar System and the internal dynamics of nearby galaxies as well as clusters of galaxies. This approach is extended to nonlocal Newtonian cosmology, where the attraction of gravity fades with the expansion of the universe. Thus far only some of the consequences of NLG have been compared with observation.

scholarly journals Entanglement entropy for $$ \mathrm{T}\overline{\mathrm{T}} $$, $$ \mathrm{J}\overline{\mathrm{T}} $$, $$ \mathrm{T}\overline{\mathrm{J}} $$ deformed holographic CFT

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Soumangsu Chakraborty ◽  
Akikazu Hashimoto
Keyword(s):  
Parameter Space ◽  
Wilson Loop ◽  
Lorentz Invariance ◽  
Entanglement Entropy ◽  
Geodesic Equation ◽  
Leading Order ◽  
Theoretic Analysis ◽  
Expectation Value ◽  
Spatial Coordinates ◽  
Single Trace

Abstract We derive the geodesic equation for determining the Ryu-Takayanagi surface in AdS3 deformed by single trace $$ \mu T\overline{T} $$ μT T ¯ + $$ {\varepsilon}_{+}J\overline{T} $$ ε + J T ¯ + $$ {\varepsilon}_{-}T\overline{J} $$ ε − T J ¯ deformation for generic values of (μ, ε+, ε−) for which the background is free of singularities. For generic values of ε±, Lorentz invariance is broken, and the Ryu-Takayanagi surface embeds non-trivially in time as well as spatial coordinates. We solve the geodesic equation and characterize the UV and IR behavior of the entanglement entropy and the Casini-Huerta c-function. We comment on various features of these observables in the (μ, ε+, ε−) parameter space. We discuss the matching at leading order in small (μ, ε+, ε−) expansion of the entanglement entropy between the single trace deformed holographic system and a class of double trace deformed theories where a strictly field theoretic analysis is possible. We also comment on expectation value of a large rectangular Wilson loop-like observable.

scholarly journals Testing Lorentz invariance violations in the tritium beta-decay anomaly

2000 ◽  
Vol 494 (1-2) ◽  
pp. 75-80 ◽  
Author(s):  
J.M Carmona ◽  
J.L Cortés
Keyword(s):  
Beta Decay ◽  
Lorentz Invariance

Deformed space–time transformations in Mercury

2017 ◽  
Vol 31 (23) ◽  
pp. 1750168 ◽  
Author(s):  
F. Cardone ◽  
G. Albertini ◽  
D. Bassani ◽  
G. Cherubini ◽  
E. Guerriero ◽  
...  
Keyword(s):  
Neutron Emission ◽  
Lorentz Invariance ◽  
Analytical Techniques ◽  
Solid Material ◽  
Transformation Product ◽  
Atomic Weight ◽  
Space Time ◽  
Invariance Violation ◽  
Icp Ms ◽  
Aisi 304 Steel

A mole of Mercury was suitably treated by ultrasound in order to generate in it the same conditions of local Lorentz invariance violation that were generated in a sonicated cylindrical bar of AISI 304 steel and that are the cause of neutron emission during the sonication. After 3 min, part of the mercury turned into a solid material which turned out to contain isotopes having a different mass (higher and lower) with respect to the isotopes already present in the initial material (mercury). These transformations in the atomic weight without gamma production above the background are brought about during Deformed Space–Time reactions. We present the results of the analyses performed on samples taken from the transformation product. The analyses have been done in two groups, the first one using five different analytical techniques: ICP-OES, XRF, ESEM-EDS, ICP-MS, INAA. In the second group of analyses, we used only two techniques: INAA and ICP-MS. The second group of analyses confirmed the occurring of the transformations in mercury.

Breakdown of Lorentz Invariance

1967 ◽  
Vol 159 (5) ◽  
pp. 1106-1110 ◽  
Author(s):  
T. G. Pavlopoulos
Keyword(s):  
Lorentz Invariance
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