Tootfinder

Exponential Suppression of the Unruh Effect and Geometric Enhancement in a Fermionic Cavity QED Setup
Vladimir Toussaint
https://arxiv.org/abs/2510.11460 https://

Exponential Suppression of the Unruh Effect and Geometric Enhancement in a Fermionic Cavity QED Setup
The Unruh effect -- the prediction that an accelerated observer perceives the vacuum as a thermal bath -- remains one of the most profound yet experimentally unverified consequences of quantum field theory. This work analyzes the decay of an excited state within a uniformly accelerated cavity to explain the historical null results and identify an alternative measurable signature. We model a massless Dirac field confined to a uniformly accelerated cavity, coupled to an external massive Dirac fie…

Simulating Unruh Radiation in High-Intensity Laser-Electron Interactions for Near-Term Experimental Tests
Rafi Hessami, Haidar Al-Naseri, Monika Yadav, Maanas Hemanth Oruganti, Brian Naranjo, James Rosenzweig
https://arxiv.org/abs/2509.07386

Simulating Unruh Radiation in High-Intensity Laser-Electron Interactions for Near-Term Experimental Tests
The Unruh effect predicts that a uniformly accelerating observer perceives the vacuum as a thermal bath, yet direct observation remains elusive [1]. We simulate Unruh radiation in realistic high-intensity laser-electron collisions relevant to FACET-II and LUXE using fully three-dimensional Monte Carlo methods. In our model, Unruh emission is treated as scattering from a rest-frame thermal spectrum with Klein-Nishina cross sections, while nonlinear Compton radiation is computed across many harmo…

Twenty years of blazar monitoring with the INAF radio telescopes
N. Marchili (INAF Istituto di Radioastronomia), S. Righini (INAF Istituto di Radioastronomia - Stazione di Medicina), M. Giroletti (INAF Istituto di Radioastronomia), C. M. Raiteri (INAF Osservatorio Astrofisico di Torino), R. P. Giri (INAF Istituto di Radioastronomia, Dipartimento di Fisica e Astronomia 'Augusto Righi', Universita' di Bologna), M. I. Carnerero (INAF Osservatorio Astrofisico di Torino), M. Vil…

Twenty years of blazar monitoring with the INAF radio telescopes
The extreme variability of blazars, in both timescale and amplitude, is generally explained as the effect of a relativistic jet closely aligned to the observer's line-of-sight. Due to causality arguments, variability characteristics translate into spatial information about the emitting region of blazars. Since radiation at different wavelengths is emitted in different parts of the jet, multi-frequency observations provide us with a virtual view of the structure of the jet on different scales. R…

Waiting around for Unruh
Leo J. A. Parry, Diego Vidal-Cruzprieto, Christopher J. Fewster, Jorma Louko
https://arxiv.org/abs/2508.19987 https://arxiv.org/pd…

Waiting around for Unruh
How long does a uniformly rotating observer need to interact with a quantum field in order to register an approximately thermal response due to the circular motion Unruh effect? We address this question for a massless scalar field in 2+1 dimensions, defining the effective temperature via the ratio of excitation and de-excitation rates of an Unruh-DeWitt detector in the long interaction time limit. In this system, the effective temperature is known to be significantly smaller than the linear mot…