Effects of Lorentz violation in superconductivity

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.

Download Full-text

Matter-sector Lorentz violation in binary pulsars

Physical Review D ◽

10.1103/physrevd.92.125028 ◽

2015 ◽

Vol 92 (12) ◽

Cited By ~ 14

Author(s):

Ross J. Jennings ◽

Jay D. Tasson ◽

Shun Yang

Keyword(s):

Lorentz Violation ◽

Binary Pulsars ◽

Matter Sector

Download Full-text

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

Symmetry ◽

10.3390/sym9110248 ◽

2017 ◽

Vol 9 (11) ◽

pp. 248 ◽

Cited By ~ 5

Author(s):

Donald Colladay ◽

Jacob Noordmans ◽

Robertus Potting

Keyword(s):

Z Boson ◽

Lorentz Violation

Download Full-text

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

Modern Physics Letters A ◽

10.1142/s0217732315500376 ◽

2015 ◽

Vol 30 (07) ◽

pp. 1550037 ◽

Cited By ~ 4

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.

Download Full-text