Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Yuri Bonder"'
Autor:
Bruno Arderucio Costa, Yuri Bonder
Publikováno v:
Physics Letters B, Vol 849, Iss , Pp 138431- (2024)
We study the effects of torsion as predicted by the Einstein-Cartan theory in the test-particle non-relativist approximation. We derive the corresponding 2-spinor Hamiltonian. Then, we solve an idealized reflection and transmission problem for a beam
Externí odkaz:
https://doaj.org/article/ebf02477adc54bdf8b3a08ab770e9455
Autor:
Yuri Bonder, Cristóbal Corral
Publikováno v:
Symmetry, Vol 10, Iss 10, p 433 (2018)
It is well known that a theory with explicit Lorentz violation is not invariant under diffeomorphisms. On the other hand, for geometrical theories of gravity, there are alternative transformations, which can be best defined within the first-order for
Externí odkaz:
https://doaj.org/article/39b04416564748799f6c8035e386b075
Publikováno v:
Annals of Physics. 453:169303
Several approaches to quantum gravity suggest violations of Lorentz symmetry as low-energy signatures. This article uses a concrete Lorentz-violating quantum field theory to study different inertial vacua. We show that they are unitarily inequivalent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea03be09b1e552590ea3a7af6d366d28
https://doi.org/10.1016/j.aop.2023.169303
https://doi.org/10.1016/j.aop.2023.169303
Autor:
Yuri Bonder, Johas D. Morales
The experimental results that test Bell's inequality have found strong evidence suggesting that there are nonlocal aspects in nature. Evidently, these nonlocal effects, which concern spacelike separated regions, create an enormous tension between gen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d91e220a5cb1ae0941ca79787d8a84eb
http://arxiv.org/abs/2204.00143
http://arxiv.org/abs/2204.00143
Autor:
Yuri Bonder, Christian Peterson
The Standard Model Extension (SME) is a generic parametrization for Lorentz violation and the phenomenological consequences of the minimal gravity sector of the SME are usually studied using a post-Newtonian expansion that requires spacetime to be as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b51df85a6b2439a08734dd906951af4c
http://arxiv.org/abs/2103.07611
http://arxiv.org/abs/2103.07611
Autor:
Cristóbal Corral, Yuri Bonder
Publikováno v:
CPT and Lorentz Symmetry.
A method to find the symmetries of a theory in the first order formalism of gravity is presented. This method is applied to the minimal gravity sector of the Standard Model Extension. It is argued that no inconsistencies arise when Lorentz violation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b5e620fd5b722618da159ee2d17965e
https://doi.org/10.1142/9789811213984_0007
https://doi.org/10.1142/9789811213984_0007
Autor:
Christian Peterson, Yuri Bonder
Lorentz violation is motivated by quantum gravity and it is generically described by nondynamical tensors. In this work a Lorentz violating extension of general relativity is studied where a nondynamical tensor couples to the Weyl tensor. A family of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6f53349c2e07ca0e0e1022418935d87
Autor:
Cristóbal Corral, Yuri Bonder
Publikováno v:
Symmetry
Volume 10
Issue 10
Symmetry, Vol 10, Iss 10, p 433 (2018)
Volume 10
Issue 10
Symmetry, Vol 10, Iss 10, p 433 (2018)
It is well known that a theory with explicit Lorentz violation is not invariant under diffeomorphisms. On the other hand, for geometrical theories of gravity, there are alternative transformations, which can be best defined within the first-order for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5efcf7e72cc329396d4ba84bdb5a0333
Autor:
Yuri Bonder, Christian Peterson
Publikováno v:
Modern Physics Letters A. 35:2050052
When spacetime torsion is present, geodesics and autoparallels generically do not coincide. In this work, the well-known method that uses Killing vectors to solve the geodesic equations is generalized for autoparallels. The main definition is that of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98d44d5b2b1569c442f3e90d8587e9ac
https://doi.org/10.1142/s0217732320500522
https://doi.org/10.1142/s0217732320500522
Autor:
Yuri Bonder, Cristóbal Corral
Unimodular gravity is an interesting approach to address the cosmological constant problem, since the vacuum energy density of quantum fields does not gravitate in this framework, and the cosmological constant appears as an integration constant. Thes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::837f9706757879473b02c82c0fe695bf