scholarly journals Positivity vs. Lorentz-violation: an explicit example

2021 ◽  
Vol 2021 (10) ◽  
pp. 079
Author(s):  
Katsuki Aoki ◽  
Shinji Mukohyama ◽  
Ryo Namba
Keyword(s):  
Lorentz Violation

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 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 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 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.

scholarly journals Impact of Lorentz violation on the dynamics of inflation

2009 ◽  
Vol 79 (12) ◽  
Author(s):  
P. P. Avelino ◽  
D. Bazeia ◽  
L. Losano ◽  
R. Menezes ◽  
J. J. Rodrigues
Keyword(s):  
Lorentz Violation

scholarly journals Testing Lorentz violation using propagating UHECRs

2009 ◽  
Vol 9 (4) ◽  
pp. 409-421
Author(s):  
Cong-Xin Qiu ◽  
Zi-Gao Dai
Keyword(s):  
Lorentz Violation
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