78 research outputs found
Monopole characteristics in various Abelian gauges
Renormalization group (RG) smoothing is employed on the lattice to
investigate and to compare the monopole structure of the SU(2) vacuum as seen
in different gauges (maximally Abelian (MAG), Polyakov loop (PG) and Laplacian
gauge (LG)). Physically relevant types of monopoles (LG and MAG) are
distinguished by their behavior near the deconfining phase transition. For the
LG, Abelian projection reproduces well the gauge independent monopole structure
encoded in an auxiliary Higgs field. Density and localization properties of
monopoles, their non-Abelian action and topological charge are studied. Results
are presented confirming the Abelian dominance with respect to the
non-perturbative static potential for all gauges considered.Comment: 36 pages, 12 figure
A realistic example of chaotic tunneling: The hydrogen atom in parallel static electric and magnetic fields
Statistics of tunneling rates in the presence of chaotic classical dynamics
is discussed on a realistic example: a hydrogen atom placed in parallel uniform
static electric and magnetic fields, where tunneling is followed by ionization
along the fields direction. Depending on the magnetic quantum number, one may
observe either a standard Porter-Thomas distribution of tunneling rates or, for
strong scarring by a periodic orbit parallel to the external fields, strong
deviations from it. For the latter case, a simple model based on random matrix
theory gives the correct distribution.Comment: Submitted to Phys. Rev.
Suplemento mineral aniônico para vacas no periparto: parâmetros sanguíneos, urinários e incidência de patologias de importância na bovinocultura leiteira
Membrane and envelope virus proteins co-expressed as lysosome associated membrane protein (LAMP) fused antigens: a potential tool to develop DNA vaccines against flaviviruses
Avaliação do perfil metabólico de vacas da raça Holandesa durante o período de transição
Short Communication: Ca2+-Adenosine Triphosphatase Protein Expression in the Mammary Gland of Periparturient Cows
Plasma Concentrations of 1,25-Dihydroxyvitamin D, 1,24R,25-Trihydroxyvitamin D3, and 1,25,26-Trihydroxyvitamin D3 After Their Administration to Dairy Cows
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