695 research outputs found
The Mirror Universes
In this paper we investigate the structure of the Mirror Universes. The two
universes are coupled with transformation t to -t. It is shown that for Planck
scale the oscillations of temperature of the universes are observed. For the
Mirror Universes the temperature fields are shifted in phase.
Key words: Gravity; Universe temperature; Oscillation of temperature.Comment: 2 pages, 2 figure
Anthropic calculation of the velocity and acceleration of the space-time
In this paper considering quantum heat transport equation (QHT) formulated in
our earlier papers the temperature for universes with G < 0 is calculated. As
the solution of complex QHT (Schrodinger type equation), the temperature is
complex also. We argue that due to anthropic limitation of the observer
ImT(r,t)=0 From this condition the discretization of space-time radius R,
velocity of the universe expansion v, Hubble parameter H and acceleration of
the expansion a are calculated. The agreement with observational data for our
Universe is quite good. PACS 98.62.Py PACS 98.80.Bp PACS 98.80.CqComment: 7pg
On the hyperbolic Pennes equation description of the heat pulse-human cornea interaction
In this paper laser heating of human cornea is investigated. The new heat
transport equation in cornea -hyperbolic Pennes equation is formulated and
solved. It is shown that for ultra-short laser pulses the thermal energy
propagates with finite velocity whereas for parabolic Pennes equation velocity
is infiniteComment: 20 pgs 8 figs. arXiv admin note: substantial text overlap with
arXiv:0805.0436, arXiv:0706.0011, and with gr-qc/0111112 and
arXiv:gr-qc/0102026 by other authors without attributio
Sub- and Supersonic Heat Motion Induced by Femtosecond Laser Pulses
In this paper the superheating of electron plasma by femtosecond laser pulses
is investigated. With Heaviside thermal equation (Lasers in Engineering, 12,
(2002), p.17) the generation of superhot electrons is described. It is shown
that in hot electron plasma (i.e. with electron energies >5MeV) the thermal
shock waves can be generated. Key words: Femtosecond laser pulses; Hot electron
plasma; Shock thermal waves.Comment: 11 pages, 11 figure
Thermal processes generated in quark-gluon plasma by yoctosecond laser pulses
In this paper the thermal processes generated by yoctosecond (10-24 s) laser
pulses in QGP are investigated. Considering that the relaxation time in QGP is
of the order of 1 ys it is shown that in QGP the yoctosecond laser pulses can
generate the thermal waves with velocity v = c (0.3 fm/ys).
Key words: QGP, thermal waves, yoctosecond pulsesComment: 12pg
Weyl equation for temperature fields induced by attosecond laser pulses
In this paper the Weyl equation for temperature field induced by laser beam
interaction with matter is proposed and solved. Depending on the scattering
mechanism the temperature field oscillate or is damped.
Key words: Thermal processes, Weyl equationComment: 9 page
On the attosecond laser pulse tissue interaction
In this paper the attosecond laser pulse tissue is investigated. The master
equation is formulated and solved. The thermal relaxation time and thermal
waves speed are calculate
Beyond the Fourier Equation: Quantum Hyperbolic Heat Transport
In this paper the quantum limit of heat transport induced by ultrashort laser
pulses is discussed. The new quantum heat transport equation is derived. The
relaxation time tau and diffusion coefficient D^e are calculated.Comment: 8 page
Scaling law in thermal phenomena
In this paper the scaling law for the relaxation times in thermal phenomena
is investigated. It is shown that dependent on the value of the parameter
K=E/m(c\alpha)^2,where E is the energy which is delivered to the system, m is
the parton mass and \alpha=1/137 for electromagnetic interaction and
\alpha=0.16 for strong interaction respectively, heat transport is diffusive,
for K1. For the system with N partons
the relaxation time is scaled as \tau^N\to N (\hbar/(mc\alpha)^2).
Key words: Thermal phenomena, scalingComment: 7 page
Pi-meson as the quanta of non-newtonian hadronic fluid
It occurs that when we attempt to melt the nucleon in order to obtain the
free quark gas, or QGP fluid the mass of the heat quantum (heaton) is equal to
the pi-meson mass.
Key words: Heat quanta; Quantum heat transport; Quantum diffusion
coefficient.Comment: 10 page
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