Peculiar thermal states in the first-order thermodynamics of gravity
arXiv:2206.02046 · doi:10.1103/PhysRevD.106.024049
Abstract
In the context of the recently proposed first-order thermodynamics of scalar-tensor gravity, we discuss the possibility of zero-temperature states of equilibrium other than Einstein gravity, including pathological Brans-Dicke theory, Palatini gravity, and cuscuton gravity, all with non-dynamical scalar fields. The formalism is extended to Nordström gravity, which contains only a scalar degree of freedom and has negative temperature relative to general relativity.
arXiv comment10 pages, latex
References in corpus (45)
- f(R) Theories Of Gravity
- Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
- Modified Gravity and Cosmology
- The Confrontation between General Relativity and Experiment
- f(R) theories
- Thermodynamics of Spacetime: The Einstein Equation of State
- Non-equilibrium Thermodynamics of Spacetime
- Action functionals for relativistic perfect fluids
- A systematic approach to generalisations of General Relativity and their cosmological implications
- Cuscuton: A Causal Field Theory with an Infinite Speed of Sound
- Rastall gravity is equivalent to Einstein gravity
- Generic instabilities of non-singular cosmologies in Horndeski theory: a no-go theorem
- Generalized Galileons: instabilities of bouncing and Genesis cosmologies and modified Genesis
- Surface singularities in Eddington-inspired Born-Infeld gravity
- Cuscuton Cosmology: Dark Energy meets Modified Gravity
- Cuscuton and low energy limit of Horava-Lifshitz gravity
- Nonequivalence of equivalence principles
- "Shadowy" modes in Higher-Order Scalar-Tensor theories
- Stability of Geodesically Complete Cosmologies
- Unimodular relativity and cosmological constant
- Extended Cuscuton: Formulation
- How unimodular gravity theories differ from general relativity at quantum level
- Imperfect fluid description of modified gravities
- Scalar-Vector-Tensor Gravity Theories
- Generalized multi-Galileons, covariantized new terms, and the no-go theorem for non-singular cosmologies
- Cuscuton Bounce
- On the emergence of Lorentzian signature and scalar gravity
- Hamiltonian analysis of the cuscuton
- First-order thermodynamics of Horndeski gravity
- Cuscuton gravity as a classically stable limiting curvature theory
- Thermodynamics of scalar-tensor gravity
- Caustics for Spherical Waves
- Revisiting the cuscuton as a Lorentz-violating gravity theory
- Reversible and Irreversible Spacetime Thermodynamics for General Brans-Dicke Theories
- The critical geometry of a thermal big bang
- First-order thermodynamics of scalar-tensor cosmology
- Theory of Cosmological Perturbations with Cuscuton
- Cuscuton kinks and branes
- Equivalence between Horndeski and beyond Horndeski theories and imperfect fluids
- Dressed Power-law Inflation with Cuscuton
- Accelerating Universe with a stable extra dimension in cuscuton gravity
- Cuscuta-Galileon cosmology: Dynamics, gravitational "constant"s and the Hubble Constant
- The strong equivalence principle from gravitational gauge structure
- General background conditions for K-bounce and adiabaticity
- Stealth metastable state of scalar-tensor thermodynamics