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Causal Thermodynamics in Relativity

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arxiv astro-ph/9609119 v1 pith:7IFYW4Q7 submitted 1996-09-18 astro-ph

Causal Thermodynamics in Relativity

classification astro-ph
keywords causalthermodynamicscosmologyrelativisticsomeapplicationsastrophysicsbegin
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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I review the causal relativistic thermodynamics developed by Israel and Stewart, and discuss some applications in cosmology and astrophysics. The lectures begin with an overview of relativistic fluid dynamics (in a covariant formalism) and equilibrium thermodynamics. Causal bulk viscosity in cosmology is considered in detail, including some new results.

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Cited by 12 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. First-order thermodynamics of multi-scalar-tensor gravity

    gr-qc 2026-04 unverdicted novelty 7.0

    Multi-scalar-tensor gravity admits an exact covariant thermodynamic interpretation as an imperfect fluid whose heat flux involves a coupling-derived factor χ and a residual gradient sector, yielding multi-field therma...

  2. Eckart heat-flux applicability in $F(\Phi,X)R$ theories and the existence of temperature gradients

    gr-qc 2025-12 unverdicted novelty 7.0

    Eckart heat flux holds for all timelike scalar configurations in F(Φ,X)R + G theories if and only if F_X ≡ 0, reducing the theory to a Jordan-like subclass of Horndeski.

  3. Constraints on the Phenomenology of Dissipative Cosmological Memory from BAO (BOSS + DESI 2024) and Pantheon+ Data

    gr-qc 2026-05 unverdicted novelty 6.0

    A three-parameter dissipative memory model is tested on BOSS, DESI 2024, and Pantheon+ data and found to be indistinguishable from Lambda CDM with epsilon below 0.05 at 95 percent CL for low redshifts.

  4. Towards a causal effective thermodynamics of scalar-tensor gravity

    gr-qc 2026-05 unverdicted novelty 6.0

    Extends scalar-tensor gravity thermodynamics to causal Israel-Stewart model via timelike heat flux ansatz, decoupling T and K while preserving GR equilibrium.

  5. A general formalism for coupling scalar fields to the Einstein equations without a variational principle

    gr-qc 2026-04 unverdicted novelty 6.0

    A non-variational method for coupling scalar fields to gravity reproduces known models and produces asymptotically Kasner Bianchi I solutions under specific conditions.

  6. First-order thermodynamics of multi-scalar-tensor gravity

    gr-qc 2026-04 conditional novelty 6.0

    Jordan-frame multi-scalar-tensor gravity admits an Eckart-like first-order thermodynamic description whose heat flux and residual gradient sector are not generically reducible to a single KT-type quantity.

  7. Thermal channels of scalar and tensor waves in Jordan-frame scalar--tensor gravity

    gr-qc 2026-03 unverdicted novelty 6.0

    Scalar and tensor perturbations in Jordan-frame scalar-tensor gravity admit an exact linear-order Eckart effective-fluid description, with gravitational-wave damping governed by the scalar sector's transverse-traceles...

  8. New interpretation of the Minkowski limit of $R^2$ gravity

    gr-qc 2026-06 unverdicted novelty 5.0

    The Minkowski limit of pure R² gravity is reinterpreted as a thermal singularity via scalar-tensor to Eckart fluid analogy, showing infinite departure from GR rather than recovery.

  9. Towards a causal effective thermodynamics of scalar-tensor gravity

    gr-qc 2026-05 conditional novelty 5.0

    A causal Israel–Stewart extension of scalar-tensor thermodynamics is constructed via a timelike heat-flux ansatz, enabling the first explicit split of K and T in Bianchi I and FLRW universes.

  10. Thermodynamic behavior of cosmological models with fractional entropy

    gr-qc 2026-04 unverdicted novelty 5.0

    Fractional entropy on the apparent horizon yields stable modified cosmology that fits late-time data best at α near 2, shifting H0 upward as α decreases.

  11. The near equilibrium Einstein-Boltzmann system with a simplified collision term

    gr-qc 2026-04 unverdicted novelty 5.0

    A BGK collision term yields first-order Chapman-Enskog thermal coefficients that close the Einstein-Boltzmann system for spatially homogeneous models with dissipation.

  12. Traversable Wormhole De-singularization: Almost $\eta$-Ricci-Yamabe Solitons in Static Spherically Symmetric Imperfect Fluid Spacetimes

    gr-qc 2026-07 reject novelty 4.0

    The paper argues that an almost η-Ricci-Yamabe soliton can turn a static black hole into a traversable wormhole, but the argument reduces to coordinate identities and an inconsistent horizon condition.