Zobrazeno 1 - 10
of 194
pro vyhledávání: '"Unruh, W."'
Autor:
Ben-Benjamin, J. S., Scully, M. O., Fulling, S. A., Lee, D. M., Page, D. N., Svidzinsky, A. A., Zubairy, M. S., Duff, M. J., Glauber, R., Schleich, W. P., Unruh, W. G.
When ground-state atoms are accelerated and the field with which they interact is in its normal vacuum state, the atoms detect Unruh radiation. We show that atoms falling into a black hole emit acceleration radiation which, under appropriate initial
Externí odkaz:
http://arxiv.org/abs/1906.01729
The partner mode with respect to a vacuum state for a given mode (like that corresponding to one of the thermal particles emitted by a black hole) is defined and calculated. The partner modes are explicitly calculated for a number of cases, in partic
Externí odkaz:
http://arxiv.org/abs/1503.06109
Autor:
Unruh, W. G.
It is argued that Hawking radiation has indeed been measured and shown to posses a thermal spectrum, as predicted. This contention is based on three separate legs. The first is that the essential physics of the Hawking process for black holes can be
Externí odkaz:
http://arxiv.org/abs/1401.6612
Autor:
Unruh, W G
A variety of historical coordinates in which the Schwarzschild metric is regular over the whole of the extended spacetime are compared and the hypersurfaces of constant coordinate are graphically presented. While the Kruscal form (one of the later fo
Externí odkaz:
http://arxiv.org/abs/1401.3393
Autor:
Schützhold, R., Unruh, W. G.
Inspired by the condensed matter analogues of black holes (a.k.a. dumb holes), we study Hawking radiation in the presence of a modified dispersion relation which becomes super-luminal at large wave-numbers. In the usual stationary coordinates $(t,x)$
Externí odkaz:
http://arxiv.org/abs/1308.2159
Autor:
Unruh, W. G.
That decoherence can take place in the presence of energy conservation seems to be a poorly known fact. That lack of knowledge has for example bedevilled the discussion of the "black hole information" problem. I present a simple model which illustrat
Externí odkaz:
http://arxiv.org/abs/1205.6750
Autor:
Unruh, W. G.
The equations for waves on the surface of an irrotational incompressible fluid are derived in the coordinates of the velocity potential/stream function. The low frequency shallow water approximation for these waves is derived for a varying bottom top
Externí odkaz:
http://arxiv.org/abs/1205.6751
Autor:
Unruh, W. G., Schützhold, R.
Belgiorno et al have reported on experiments aiming at the detection of (the analogue of) Hawking radiation using laser filaments [F. Belgiorno et al, Phys. Rev. Lett. 105, 203901 (2010)]. They sent intense focused Bessel pulses into a non-linear die
Externí odkaz:
http://arxiv.org/abs/1202.6492
Autor:
Unruh, W. G.
The slinky, released from rest hanging under its own weight, falls in a peculiar manner. The bottom stays at rest until a wave hits it from above. Two cases -- one unphysical one where the slinky is able to pass through itself, and the other where th
Externí odkaz:
http://arxiv.org/abs/1110.4368
Autor:
Unruh, W. G.
The quantum noise in a linear amplifier is shown to be thermal noise. The theory of linear amplifiers is applied first to the simplest, single or double oscillator model of an amplifier, and then to linear model of an amplifier with continuous fields
Externí odkaz:
http://arxiv.org/abs/1107.2669