Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Vanzella, Daniel A. T."'
We propose a model for a finite-size particle detector, which allows us to derive its stress-energy tensor. This tensor is obtained from a covariant Lagrangian that describes not only the quantum field that models the detector, $\phi_{\text{d}}$, but
Externí odkaz:
http://arxiv.org/abs/2411.09732
We discuss the information loss issue for completely evaporating black holes in the context of a globally hyperbolic spacetime that maintains unchanged the entire semiclassical picture except for the "last evaporation breath," which pertains to full
Externí odkaz:
http://arxiv.org/abs/2402.19140
Publikováno v:
Scientific Reports, vol. 14, article number 22594 (2024)
We revisit Duff, Okun, and Veneziano's divergent views on the number of fundamental constants and argue that the issue can be set to rest by having spacetime as the starting point. This procedure disentangles the resolution in what depends on the ass
Externí odkaz:
http://arxiv.org/abs/2311.09249
Autor:
Vanzella, Daniel A. T.
Einstein's famous equivalence principle is certainly one of the most striking features of the gravitational interaction. In a strict reading, it states that the effects of gravity can be made to disappear $locally$ by a convenient choice of reference
Externí odkaz:
http://arxiv.org/abs/2209.01186
Autor:
Silva, Rodrigo Andrade e, Landulfo, Andre G. S., Matsas, George E. A., Vanzella, Daniel A. T.
The harmonic oscillator plays a central role in physics describing the dynamics of a wide range of systems close to stable equilibrium points. The nonrelativistic one-dimensional spring-mass system is considered a prototype representative of it. It i
Externí odkaz:
http://arxiv.org/abs/1810.13365
Publikováno v:
Nature Communications, volume 10, Article number: 3030 (2019)
It has been proved in the context of quantum fields in Minkowski spacetime that the vacuum state is a thermal state according to uniformly accelerated observers -- a seminal result known as the Unruh effect. Recent claims, however, have challenged th
Externí odkaz:
http://arxiv.org/abs/1805.00168
Autor:
Cozzella, Gabriel, Fulling, Stephen A., Landulfo, Andre G. S., Matsas, George E. A., Vanzella, Daniel A. T.
Publikováno v:
Phys. Rev. D 97, 105022 (2018)
Recently, the inverse $\beta$-decay rate calculated with respect to uniformly accelerated observers (experiencing the Unruh thermal bath) was revisited. Concerns have been raised regarding the compatibility of inertial and accelerated observers' resu
Externí odkaz:
http://arxiv.org/abs/1803.06400
The Unruh effect is essential to keep the consistency of quantum field theory in inertial and uniformly accelerated frames. Thus, the Unruh effect must be considered as well tested as quantum field theory itself. In spite of it, it would be nice to r
Externí odkaz:
http://arxiv.org/abs/1803.05059
Publikováno v:
Phys. Rev. Lett. 118, 161102 (2017)
The Unruh effect -- according to which linearly accelerated observers with proper acceleration a= constant in the (no-particle) vacuum state of inertial observers experience a thermal bath of particles with temperature $T_U = a \hbar / (2 \pi k_B c)$
Externí odkaz:
http://arxiv.org/abs/1701.03446
Publikováno v:
Scientific Reports; 9/30/2024, Vol. 14 Issue 1, p1-12, 12p
