Thermal stability of stealth and de Sitter spacetimes in scalar-tensor gravity

Abstract

Stealth solutions of scalar-tensor gravity and less-known de Sitter spaces that generalize them are analyzed regarding their possible role as thermal equilibria at non-zero temperature in the new first-order thermodynamics of scalar-tensor gravity. No stable equilibria are found, further validating the special role of general relativity as an equilibrium state in the landscape of gravity theories, seen through the lens of first-order thermodynamics.

10 pages, no figures

References in corpus (14)

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• Matter instability in modified gravity
• de Sitter space and the equivalence between f(R) and scalar-tensor gravity
• The phase space view of f(R) gravity
• Gravitational Cheshire effect: Nonminimally coupled scalar fields may not curve spacetime
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Cited by in corpus (8)

• Thermal origin of the attractor-to-general-relativity in scalar-tensor gravity
• First-order thermodynamics of Horndeski cosmology
• First-order thermodynamics of scalar-tensor gravity
• Alternative formulations of the thermodynamics of scalar-tensor theories
• Black hole ringdown from physically sensible initial value problem in higher-order scalar-tensor theories
• Non-Noetherian conformal Cheshire effect
• Thermal channels of scalar and tensor waves in Jordan-frame scalar--tensor gravity
• Thermal description of braneworld effective theories