Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Matsas, G. E. A."'
Publikováno v:
Phys.Rev.D86:104025,2012
Dense enough compact objects were recently shown to lead to an exponentially fast increase of the vacuum energy density for some free scalar fields properly coupled to the spacetime curvature as a consequence of a tachyonic-like instability. Once the
Externí odkaz:
http://arxiv.org/abs/1204.3654
Publikováno v:
Phys.Rev.A81:062130,2010
We use the Unruh effect to analyze the dynamics of classical and quantum correlations for a two-qubit system when one of them is uniformly accelerated for a finite amount of proper time. We show that the quantum correlation is completely destroyed in
Externí odkaz:
http://arxiv.org/abs/1003.4477
Publikováno v:
Phys.Rev.D79:101502,2009
We revisit the mechanism for violating the weak cosmic-censorship conjecture (WCCC) by overspinning a nearly-extreme charged black hole. The mechanism consists of an incoming massless neutral scalar particle, with low energy and large angular momentu
Externí odkaz:
http://arxiv.org/abs/0905.1077
Publikováno v:
Phys.Rev. D68 (2003) 084022
We study and look for similarities between the response rates $R^{\rm dS}(a_0, \Lambda)$ and $R^{\rm SdS}(a_0, \Lambda, M)$ of a static scalar source with constant proper acceleration $a_0$ interacting with a massless, conformally coupled Klein-Gordo
Externí odkaz:
http://arxiv.org/abs/gr-qc/0308015
Publikováno v:
Phys.Rev. D67 (2003) 067502
We revisit the recently found equivalence for the response of a static scalar source interacting with a {\em massless} Klein-Gordon field when the source is (i) static in Schwarzschild spacetime, in the Unruh vacuum associated with the Hawking radiat
Externí odkaz:
http://arxiv.org/abs/gr-qc/0211053
Publikováno v:
Phys.Rev.D63:124008,2001; Erratum-ibid.D80:029906,2009
We discuss the Gupta-Bleuler quantization of the free electromagnetic field outside static black holes in the Boulware vacuum. We use a gauge which reduces to the Feynman gauge in Minkowski spacetime. We also discuss its relation with gauges used pre
Externí odkaz:
http://arxiv.org/abs/gr-qc/0011070
We argue in favor of the existence of the LIPs, the least interacting particles, which would only interact with ordinary matter through gravitational field and could account for (at least) part of the dark matter. The detectability of LIP matter is a
Externí odkaz:
http://arxiv.org/abs/hep-ph/9810456
Publikováno v:
Phys.Rev.D58:027502,1998
We revisit two-point function approaches used to study vacuum fluctuation in wedge-shaped regions and conical backgrounds. Appearance of divergent integrals is discussed and circumvented. The issue is considered in the context of a massless scalar fi
Externí odkaz:
http://arxiv.org/abs/hep-th/9803219
Autor:
Landsberg, P. T., Matsas, G. E. A.
Publikováno v:
Phys.Lett. A223 (1996) 401-403
Using the Unruh-DeWitt detector, it is shown that a universal and continuous Lorentz transformaion of temperature cannot exist for black-body radiation. Since any valid Lorentz transformation of temperature must be able to deal with black-body radiat
Externí odkaz:
http://arxiv.org/abs/physics/9610016
Publikováno v:
Phys.Rev.D56:6071-6075,1997
We show that static sources coupled to a massless scalar field in Schwarzschild spacetime give rise to emission and absorption of zero-energy particles due to the presence of Hawking radiation. This is in complete analogy with the description of the
Externí odkaz:
http://arxiv.org/abs/gr-qc/9609025