Derives covariant quadratic expansion in extrinsic curvature of the nonlocal effective action for a massless scalar field on manifolds with boundary, extending Monge-patch results to general surfaces.
hub Canonical reference
CambridgeMonographs on Mathematical Physics
Canonical reference. 100% of citing Pith papers cite this work as background.
19
Pith papers citing it
4,616
external citations · Crossref
Background
100% of classified citations
hub tools
citation-role summary
background 6
citation-polarity summary
fields
gr-qc 6 hep-th 6 astro-ph.CO 2 cond-mat.stat-mech 1 hep-ph 1 physics.gen-ph 1 physics.optics 1 quant-ph 1roles
background 6polarities
background 6representative citing papers
The paper establishes a Lie-algebraic framework for exact Krylov dynamics in time-dependent quantum systems and introduces a quantum speed limit for complexity growth that retains its time-independent form but saturates only when the Hamiltonian commutes with itself at different times.
Tensionless strings arise exclusively at birth in the ultra-shrinking limit of a causal diamond worldsheet, revealing a new phase with global ultra-local Carrollian structure.
First experimental emulation of fermionic wave packet dynamics in Lorentzian AdS2 spacetime using photonic waveguide arrays, showing mass-independent geodesic oscillations and curvature-dependent Zitterbewegung.
Quantum matter sources an operator-valued Shapiro delay that promotes causal boundaries to noncommuting observables and allows superpositions of causal relations between spacetime points.
Decoherence rate of an Unruh-DeWitt detector scales as a^{2Δ-1} in the long-time limit, increasing with the scaling dimension Δ of the coupled field and offering a more sensitive probe of the Unruh effect.
In quantum thermalization with detailed balance, internal energy becomes E(S, dot S), extending thermodynamics to include dynamical rates.
Finite-resolution Gaussian regularization of (2+1)D flat spacetime induces a curved metric with integrated Gaussian curvature of -2 pi and an effective negative energy source of -1/(4G) independent of resolution scale.
In expanding de Sitter QED₂, a moving pseudo-critical line drives loss of adiabaticity, a late-time dip near τ_*≈3.1, and an LOCC-detectable irreversibility front in relative entropy.
Derives time-dependent apparent mass from FL dual ansatz, quantizes to KG/Dirac equations, and computes adiabatic spectra for 1D oscillators showing slow drift to zero energy.
NANOGrav data favors a blue-tilted tensor spectrum with nt ≈ 2.2, radiation-dominated reheating, and alpha-vacuum states over standard Bunch-Davies, with a frequency-dependent alpha suggested to resolve the blue-tilt tension.
Vacuum of a charged scalar in a (D+1)-dimensional cosmic dispiration with magnetic flux induces both azimuthal and axial currents, the latter from helical torsion, with closed massive/massless expressions that reduce to the pure-string case.
Dark matter freezes in from non-thermal Z' decays before reheating ends in an inflationary model with a secluded U(1)_D gauge sector, Z' reheaton, and lattice treatment of non-perturbative effects, opening viable parameter space with GW probes.
Semi-infinite slow contraction (ε>3) eliminates particle horizons, asymptotes to Minkowski in the past, remains geodesically complete and BGV-evading, and supplies stable low-entropy initial conditions after a non-singular bounce.
Exact non-perturbative calculation shows circuit complexity stays finite at the bounce and its post-bounce growth correlates with cosmological particle production via a chirping term.
Applies Parikh-Wilczek tunneling with backreaction to evaporating AdS black holes, finding luminosity deviates from blackbody scaling for small masses due to rapid mass loss, and computes renormalized energy-momentum tensor in Vaidya-AdS.
Electric charge of a Reissner-Nordström black hole enhances decoherence of Dirac entanglement inside the horizon but can temporarily boost accessible entanglement outside, while Hawking radiation transfers correlations to inaccessible regions causing apparent loss for external observers.
Gauss-Bonnet black branes in five-dimensional AdS gravity are unstable when the Gauss-Bonnet coupling falls outside the conformal collider bounds, with unstable modes connected to boundary causality-violating modes by phase rotation of complex boundary momentum.
citing papers explorer
-
Covariant extrinsic curvature expansion of the nonlocal effective action for a massless scalar field on a manifold with boundary
Derives covariant quadratic expansion in extrinsic curvature of the nonlocal effective action for a massless scalar field on manifolds with boundary, extending Monge-patch results to general surfaces.
-
Krylov Dynamics and Operator Growth in Time-Dependent Systems via Lie Algebras
The paper establishes a Lie-algebraic framework for exact Krylov dynamics in time-dependent quantum systems and introduces a quantum speed limit for complexity growth that retains its time-independent form but saturates only when the Hamiltonian commutes with itself at different times.
-
New-born strings are tensionless
Tensionless strings arise exclusively at birth in the ultra-shrinking limit of a causal diamond worldsheet, revealing a new phase with global ultra-local Carrollian structure.
-
Experimental observation of hyperbolic spacetime dynamics
First experimental emulation of fermionic wave packet dynamics in Lorentzian AdS2 spacetime using photonic waveguide arrays, showing mass-independent geodesic oscillations and curvature-dependent Zitterbewegung.
-
Quantum Matter Makes Lightcones Quantum
Quantum matter sources an operator-valued Shapiro delay that promotes causal boundaries to noncommuting observables and allows superpositions of causal relations between spacetime points.
-
Probing Unruh Effect from Enhanced Decoherence
Decoherence rate of an Unruh-DeWitt detector scales as a^{2Δ-1} in the long-time limit, increasing with the scaling dimension Δ of the coupled field and offering a more sensitive probe of the Unruh effect.
-
Thermodynamics Beyond State Functions from Quantum Relaxation
In quantum thermalization with detailed balance, internal energy becomes E(S, dot S), extending thermodynamics to include dynamical rates.
-
Finite-resolution measurement induces topological curvature defects in spacetime
Finite-resolution Gaussian regularization of (2+1)D flat spacetime induces a curved metric with integrated Gaussian curvature of -2 pi and an effective negative energy source of -1/(4G) independent of resolution scale.
-
Quantum Information Dynamics of QED$_2$ in Expanding de Sitter Universe
In expanding de Sitter QED₂, a moving pseudo-critical line drives loss of adiabaticity, a late-time dip near τ_*≈3.1, and an LOCC-detectable irreversibility front in relative entropy.
-
Klein--Gordon and Dirac Oscillators with an Apparent Mass Induced by the Momentum-Space Dual of the Fock--Lorentz Transformations
Derives time-dependent apparent mass from FL dual ansatz, quantizes to KG/Dirac equations, and computes adiabatic spectra for 1D oscillators showing slow drift to zero energy.
-
Constraints on the inflationary vacuum and reheating era from NANOGrav
NANOGrav data favors a blue-tilted tensor spectrum with nt ≈ 2.2, radiation-dominated reheating, and alpha-vacuum states over standard Bunch-Davies, with a frequency-dependent alpha suggested to resolve the blue-tilt tension.
-
Vacuum-induced current density from a magnetic flux threading a cosmic dispiration in $(D+1)$-dimensional spacetime
Vacuum of a charged scalar in a (D+1)-dimensional cosmic dispiration with magnetic flux induces both azimuthal and axial currents, the latter from helical torsion, with closed massive/massless expressions that reduce to the pure-string case.
-
Dark Matter Freeze-in from a $Z^\prime$ Reheaton
Dark matter freezes in from non-thermal Z' decays before reheating ends in an inflationary model with a secluded U(1)_D gauge sector, Z' reheaton, and lattice treatment of non-perturbative effects, opening viable parameter space with GW probes.
-
Causal Horizons, Geodesic Completeness and Stability in Slow Contraction Cosmology
Semi-infinite slow contraction (ε>3) eliminates particle horizons, asymptotes to Minkowski in the past, remains geodesically complete and BGV-evading, and supplies stable low-entropy initial conditions after a non-singular bounce.
-
Quantum Circuit Complexity as a Measure of Particle Creation in Bouncing Cosmologies
Exact non-perturbative calculation shows circuit complexity stays finite at the bounce and its post-bounce growth correlates with cosmological particle production via a chirping term.
-
Hawking atmosphere of anti-de Sitter black holes
Applies Parikh-Wilczek tunneling with backreaction to evaporating AdS black holes, finding luminosity deviates from blackbody scaling for small masses due to rapid mass loss, and computes renormalized energy-momentum tensor in Vaidya-AdS.
-
Quantum Entanglement in the Dirac Field Quantization around Charged Black Holes
Electric charge of a Reissner-Nordström black hole enhances decoherence of Dirac entanglement inside the horizon but can temporarily boost accessible entanglement outside, while Hawking radiation transfers correlations to inaccessible regions causing apparent loss for external observers.
-
Instability of 5D Gauss-Bonnet black branes
Gauss-Bonnet black branes in five-dimensional AdS gravity are unstable when the Gauss-Bonnet coupling falls outside the conformal collider bounds, with unstable modes connected to boundary causality-violating modes by phase rotation of complex boundary momentum.
- AI--Assisted Exploration: DHOST Theories without Quantum Ghosts