scholarly journals Matter-sector Lorentz violation in binary pulsars

2015 ◽  
Vol 92 (12) ◽  
Author(s):  
Ross J. Jennings ◽  
Jay D. Tasson ◽  
Shun Yang
Keyword(s):  
Lorentz Violation ◽  
Binary Pulsars ◽  
Matter Sector

scholarly journals Cross sections and lorentz violation

2001 ◽  
Vol 511 (2-4) ◽  
pp. 209-217 ◽  
Author(s):  
Don Colladay ◽  
V.Alan Kostelecký
Keyword(s):  
Cross Sections ◽  
Lorentz Violation

scholarly journals Aether SUSY breaking: can aether be alternative to F-term SUSY breaking?

2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
Yusuke Yamada
Keyword(s):  
Fluid Model ◽  
Realistic Model ◽  
Lorentz Symmetry ◽  
Susy Breaking ◽  
Accelerated Expansion ◽  
Condensation Model ◽  
Matter Sector

Abstract We investigate supersymmetry (SUSY) breaking scenarios where both SUSY and Lorentz symmetry are broken spontaneously. For concreteness, we propose models in which scalar fluid or vector condensation breaks Lorentz symmetry and accordingly SUSY. Then, we examine whether such scenarios are viable for realistic model buildings. We find, however, that the scalar fluid model suffers from several issues. Then, we extend it to a vector condensation model, which avoids the issues in the scalar fluid case. We show that accelerated expansion and soft SUSY breaking in matter sector can be achieved. In our simple setup, the soft SUSY breaking is constrained to be less than $$ \mathcal{O}(100)\mathrm{TeV} $$ O 100 TeV from the constraints on modification of gravity.

Various types of holographic metal/superconductor phase transitions with dark matter sector

2016 ◽  
Vol 26 (06) ◽  
pp. 1750046
Author(s):  
Yan Peng ◽  
Tao Chen ◽  
Guohua Liu ◽  
Pengwei Ma
Keyword(s):  
Phase Transition ◽  
Black Hole ◽  
Dark Matter ◽  
Phase Transitions ◽  
Transition Temperature ◽  
De Sitter ◽  
Holographic Superconductor ◽  
Black Hole Background ◽  
Critical Phase ◽  
Matter Sector

We generalize the holographic superconductor model with dark matter sector by including the Stückelberg mechanism in the four-dimensional anti-de Sitter (AdS) black hole background away from the probe limit. We study effects of the dark matter sector on the [Formula: see text]-wave scalar condensation and find that the dark matter sector affects the critical phase transition temperature and also the order of phase transitions. At last, we conclude that the dark matter sector brings richer physics in this general metal/superconductor system.

scholarly journals Binary pulsars and relativistic gravity

1994 ◽  
Vol 66 (3) ◽  
pp. 711-719 ◽  
Author(s):  
Joseph H. Taylor
Keyword(s):  
Binary Pulsars

scholarly journals Lorentz violation and deep inelastic scattering

2017 ◽  
Vol 769 ◽  
pp. 272-280 ◽  
Author(s):  
V. Alan Kostelecký ◽  
E. Lunghi ◽  
A.R. Vieira
Keyword(s):  
Inelastic Scattering ◽  
Deep Inelastic Scattering ◽  
Lorentz Violation

scholarly journals Lorentz Violation of the Photon Sector in Field Theory Models

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Lingli Zhou ◽  
Bo-Qiang Ma
Keyword(s):  
Field Theory ◽  
Standard Model ◽  
Degrees Of Freedom ◽  
Lorentz Violation ◽  
Detailed Structure ◽  
Standard Model Extension ◽  
Model Extension ◽  
The Standard Model ◽  
Minimal Standard

We compare the Lorentz violation terms of the pure photon sector between two field theory models, namely, the minimal standard model extension (SME) and the standard model supplement (SMS). From the requirement of the identity of the intersection for the two models, we find that the free photon sector of the SMS can be a subset of the photon sector of the minimal SME. We not only obtain some relations between the SME parameters but also get some constraints on the SMS parameters from the SME parameters. The CPT-odd coefficients(kAF)αof the SME are predicted to be zero. There are 15 degrees of freedom in the Lorentz violation matrixΔαβof free photons of the SMS related with the same number of degrees of freedom in the tensor coefficients(kF)αβμν, which are independent from each other in the minimal SME but are interrelated in the intersection of the SMS and the minimal SME. With the related degrees of freedom, we obtain the conservative constraints(2σ)on the elements of the photon Lorentz violation matrix. The detailed structure of the photon Lorentz violation matrix suggests some applications to the Lorentz violation experiments for photons.

scholarly journals CPT and Lorentz Violation in the Photon and Z-Boson Sector

Symmetry ◽  
2017 ◽  
Vol 9 (11) ◽  
pp. 248 ◽  
Author(s):  
Donald Colladay ◽  
Jacob Noordmans ◽  
Robertus Potting
Keyword(s):  
Z Boson ◽  
Lorentz Violation

scholarly journals Lorentz-violating effects in the Bose–Einstein condensation of an ideal bosonic gas

2015 ◽  
Vol 30 (07) ◽  
pp. 1550037 ◽  
Author(s):  
Rodolfo Casana ◽  
Kleber A. T. da Silva
Keyword(s):  
Lorentz Violation ◽  
Upper Bounds ◽  
Einstein Condensation ◽  
Complex Scalar ◽  
Nonrelativistic Case ◽  
Bose Einstein Condensation ◽  
Thermodynamical Properties ◽  
Complex Scalar Field ◽  
Almost All ◽  
Bose Einstein

We have studied the effects of Lorentz-violation in the Bose–Einstein condensation (BEC) of an ideal boson gas, by assessing both the nonrelativistic and ultrarelativistic limits. Our model describes a massive complex scalar field coupled to a CPT-even and Lorentz-violating background. We first analyze the nonrelativistic case, at this level by using experimental data, we obtain upper-bounds for some LIV parameters. In the sequel, we have constructed the partition function for the relativistic ideal boson gas which to be able of a consistent description requires the imposition of severe restrictions on some LIV coefficients. In both cases, we have demonstrated that the LIV contributions are contained in an overall factor, which multiplies almost all thermodynamical properties. An exception is the fraction of the condensed particles.

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