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Showing 1 to 20 of 129 for “"finite temperature"”.
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Heavy neutrino matter at finite temperature
… gas of massive neutrinos below some critical temperature, a condensed phase emerges, consisting of quasi-degenerate super-massive neutrino stars. These compact dark objects could play an important role in structure formation in this universe, as they might in fact provide the seeds for …
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Finite temperature effects in free-electron-lasers
Finite temperature effects of a Free-Electron -Laser amplifier are analysed. The formalism follows Bernstein-Hirshfield model by using the linearized relativistic Vlasov equation while keeping the exact pump potential except for its radial dependence. In addition to this, our formalism includes an …
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Semiclassical Methods in Finite Temperature Field Theory
Submitted by Carolyn Rauber (crauber2@illinois.edu) on 2011-06-03T16:54:15Z No. of bitstreams: 1 1981_noble.pdf: 3900265 bytes, checksum: 95af4c4eb39c993b10cb5c13a8602cc6 (MD5)
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Avalanches in stars and at finite temperature
… star. We then look at avalanches at finite but low temperature in plastic deformation. The slow plastic deformation of materials under stress, known as creep motion, has long been studied in material's science. We hypothesize that at low temperatures, this deformation is the result of …
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Electromagnetic pion form factor at finite temperature
… of the pion in the space-like region, and at finite temperature, Fπ(Q²,T), is obtained from a Finite Energy QCD Sum Rule. The form factor decreases with increasing T, and vanishes at some critical temperature, where the pion radius diverges, thus signalling quark deconfinement.
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Applications of QCD sum rules at finite temperature
… mesons in the vector and axial-vector channel at finite temperature. From our results of the behaviour of the width and the hadronic coupling at finite temperature, both channels of charmonium shows signs of survival beyond the deconfinement temperature Tc whereas the light-light quark mesons …
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Finite-temperature many-body perturbation theory for electrons
… identical molecules in a wide range of temperature were determined numerically as the λ-derivatives of the respective quantity calculated exactly by a thermal full configuration interaction method using a perturbation-scaled modified Hamiltonian, H^0 +λV^ . We refer to this numerical …
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Octet and decuplet baryon masses at finite temperature
Octet and decuplet baryon masses are studied at finite temperature in the framework of finite energy QCD sum rules. In all cases it is found that the mass stays fairly constant over a range of temperatures, increasing sharply near the critical temperature for deconfinement Tc.
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The Static Quark Potential at Finite Temperature and Density
… of the potential energy between an infinitely heavy quark-antiquark pair at high temperatures and densities. The calculations are carried out via lattice QCD in conjunction with a recently developed Bayesian inference method. We provide a detailed overview lattice QCD, Bayesian infer- …
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Aspects of finite temperature field theories in Ads/CFT
… I study some properties of field theories at finite temperature using the AdS/CFT correspondence. I present a general proof of an "inheritance principle" satisfied by a weakly coupled SU(N) (or U(N)) gauge theory with adjoint matter on a class of compact manifolds (like S3). In the large N …
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High contrast interferometry and finite temperature coherence of Bose-Einstein condensates
… condensate(BEC) interferometer and the finite temperature coherence of elongated BECs. Cold atom and BEC-based interferometers take advantage of the wave nature of atoms as they are cooled and can be used for precision measurements of fundamental physics, fundamental constants, rotations …
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Structural and Elastic Properties of Degenerate SnO Monolayers at Finite Temperature
… with a degenerate rectangular unit cell at zero temperature and a charge-tunable energy barrier that leads to a thermally-controllable structural phase change. Doped SnO monolayers with rectangular degenerate unit cells give rise to two-dimensional multiferroicity. Their two-dimensional elastic …
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The effects of instantons in a finite temperature quantum field theory
… for investigating a SU(2) Yang-Mills theory at finite temperature. We first begin with a review of tunneling in a one-dimensional periodic potential. Here we introduce the methods of Euclidean path integrals and the idea of an instanton. Next we proceed to review Yang-Mills' theory at zero …
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Pions and vector mesons at finite temperature from QCD sum rules
The temperature corrections to the current algebra Gell-Mann, Oakes and Renner(GMOR) relation in SU(2) X SU(2), the temperature behaviour of the pion mass and the q2 and T dependence of the ρππ vertex function in the space-like region are investigated.
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Fermion number fractionization in relativistic field theories : supersymmetry at finite temperature
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 1984
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New analytic and computational techniques for finite temperature condensed matter systems
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1992.
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Charmonium correlation and spectral functions in quenched lattice QCD at finite temperature
… the properties of charmonium states at finite temperature in quenched QCD on isotropic lattices. The standard Wilson plaquette action for the gauge field and the non-perturbatively $cO(a)$ improved clover fermion action for charm quarks are implemented in the simulation. In our …
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Open and Hidden Charm Mesons at Finite Temperature from Anisotropic Lattice QCD
… of the spectral functions of these mesons. The finite resolution in the time direction is one of the main limiting factors in obtaining reliable spectral functions from lattice QCD. In order to reduce the ensuing uncertainties we are currently producing a set of highly anisotropic lattices which …
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