hep-th

Gravitational constant as a conserved charge in black hole thermodynamics

This paper demonstrates that the gravitational constant can be realized as a conserved charge in four-dimensional Einstein gravity by employing two scalar-gauge pairs within the Abbott-Deser-Tekin formalism, thereby establishing a consistent extended thermodynamic first law and Smarr formula.

Comparing Minimal and Non-Minimal Quintessence Models to 2025 DESI Data

Mind the crosscap: $τ$-scaling in non-orientable gravity and time-reversal-invariant systems

This paper establishes a formalism linking non-orientable gravitational path integrals to time-reversal-invariant quantum chaotic systems by demonstrating that systematic cancellations of late-time divergences in Weil-Petersson volumes on non-orientable surfaces are necessary to recover the Gaussian Orthogonal Ensemble spectral statistics in the high-energy regime.

Limits on the Statistical Description of Charged de Sitter Black Holes

This paper resolves thermodynamic ambiguities in four-dimensional charged de Sitter black holes by adopting a Bousso-Hawking normalization relative to a freely-falling observer, revealing that while the near-extremal Nariai limit avoids a breakdown of the semi-classical description due to finite heat capacity, fundamental statistical limitations persist in the cold and ultracold regimes where the heat capacity vanishes.

Effects of New Forces on Scalar Dark Matter Solitons

This paper numerically investigates how introducing a new, light-mediator force between light bosonic dark matter particles alters the density-radius relationship of gravitationally bound scalar solitons (boson stars), finding that while such a force can modestly improve fits to observed galactic core data, the effect remains limited even at gravitational-strength couplings.

Positivity with Long-Range Interactions

This paper introduces a new class of infrared-finite, analytic, and unitary scattering amplitudes labeled by experimental energy resolution, which enable the derivation of infrared-safe positivity bounds for effective field theories with long-range forces in four dimensions, as demonstrated through explicit bounds for pions coupled to electromagnetism and gravity.

Gaussian fluctuating Generally covariant diffusion

This paper extends a previously developed generally covariant formalism to incorporate the diffusion of conserved charges, while clarifying the apparent distinction between chemical potential and diffusion terms.

2d Conformal Field Theories on Magic Triangle

This paper identifies all two-dimensional rational conformal field theories associated with the Cvitanovic--Deligne--Gross magic triangle, establishing a universal coset structure that generates these models from five atomic theories and revealing emergent $N=1$ supersymmetry in the subexceptional series at level two.

De Sitter Momentum Space

This paper constructs a nonperturbative Kontorovitch-Lebedev-Fourier (KLF) momentum space for quantum field theory on de Sitter spacetime, where the dS frequency serves as a unitary representation label, thereby transforming equations of motion into algebraic forms and streamlining the computation of in-in correlators and loop integrals through a group-theoretical framework.

Carrier-envelope phase and pulse shape effects on vacuum pair production in asymmetric electric fields with bell-shaped envelopes

This study demonstrates that the carrier-envelope phase and pulse shape of asymmetric electric fields significantly influence electron-positron pair production, with specific configurations capable of enhancing pair density by two to three orders of magnitude through multiphoton dominance and optimized envelope steepness.