scholarly journals Lorentz symmetry in ghost-free massive gravity

2021 ◽  
Vol 104 (10) ◽  
Author(s):  
V. Alan Kostelecký ◽  
Robertus Potting
Keyword(s):  
Massive Gravity ◽  
Lorentz Symmetry

scholarly journals Massive gravity with Lorentz symmetry breaking: Black holes as heat engines

2018 ◽  
Vol 33 (31) ◽  
pp. 1850177 ◽  
Author(s):  
Sharmanthie Fernando
Keyword(s):  
Black Hole ◽  
Symmetry Breaking ◽  
Heat Engine ◽  
Massive Gravity ◽  
Lorentz Symmetry ◽  
Extended Phase ◽  
Heat Engines ◽  
Static Black Hole ◽  
Lorentz Symmetry Breaking ◽  
Two Parameters

In extended phase space, a static black hole in massive gravity is studied as a holographic heat engine. In the massive gravity theory considered, the graviton gains a mass due to Lorentz symmetry breaking. Exact efficiency formula is obtained for a rectangle engine cycle for the black hole considered. The efficiency is computed by varying two parameters in the theory, the scalar charge Q and [Formula: see text]. The efficiency is compared with the Carnot efficiency for the heat engine. It is observed that when Q and [Formula: see text] are increased that the efficiency for the rectangle cycle increases. When compared to the Schwarzschild–AdS black hole, the efficiency for the rectangle cycle is larger for the massive gravity black hole.

scholarly journals Resolving puzzles of massive gravity with and without violation of Lorentz symmetry

2010 ◽  
Vol 27 (12) ◽  
pp. 125005 ◽  
Author(s):  
Andrei Mironov ◽  
Sergey Mironov ◽  
Alexei Morozov ◽  
Andrey Morozov
Keyword(s):  
Massive Gravity ◽  
Lorentz Symmetry

scholarly journals Gravitational wave echoes from black holes in massive gravity

2021 ◽  
Vol 103 (2) ◽  
Author(s):  
Ruifeng Dong ◽  
Dejan Stojkovic
Keyword(s):  
Black Holes ◽  
Gravitational Wave ◽  
Massive Gravity

scholarly journals Cosmological perturbations in Gauss-Bonnet quasi-dilaton massive gravity

2021 ◽  
Vol 103 (12) ◽  
Author(s):  
Amin Rezaei Akbarieh ◽  
Sobhan Kazempour ◽  
Lijing Shao
Keyword(s):  
Massive Gravity ◽  
Cosmological Perturbations

scholarly journals Thurston Geometries in Three-Dimensional New Massive Gravity

2021 ◽  
Vol 127 (6) ◽  
Author(s):  
Daniel Flores-Alfonso ◽  
Cesar S. Lopez-Monsalvo ◽  
Marco Maceda
Keyword(s):  
Three Dimensional ◽  
Massive Gravity ◽  
Thurston Geometries

scholarly journals Massive gravity from double copy

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Arshia Momeni ◽  
Justinas Rumbutis ◽  
Andrew J. Tolley
Keyword(s):  
Sigma Model ◽  
Massive Gravity ◽  
Effective Field ◽  
Effective Theory ◽  
Nonlinear Sigma Model ◽  
Limit Theory ◽  
Four Dimensions ◽  
Yang Mills ◽  
Massive Spin ◽  
Double Copy

Abstract We consider the double copy of massive Yang-Mills theory in four dimensions, whose decoupling limit is a nonlinear sigma model. The latter may be regarded as the leading terms in the low energy effective theory of a heavy Higgs model, in which the Higgs has been integrated out. The obtained double copy effective field theory contains a massive spin-2, massive spin-1 and a massive spin-0 field, and we construct explicitly its interacting Lagrangian up to fourth order in fields. We find that up to this order, the spin-2 self interactions match those of the dRGT massive gravity theory, and that all the interactions are consistent with a Λ3 = (m2MPl)1/3 cutoff. We construct explicitly the Λ3 decoupling limit of this theory and show that it is equivalent to a bi-Galileon extension of the standard Λ3 massive gravity decoupling limit theory. Although it is known that the double copy of a nonlinear sigma model is a special Galileon, the decoupling limit of massive Yang-Mills theory is a more general Galileon theory. This demonstrates that the decoupling limit and double copy procedures do not commute and we clarify why this is the case in terms of the scaling of their kinematic factors.

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.

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