33,254 research outputs found
Genetic Algorithm for SU(2) Gauge Theory on a 2-dimensional Lattice
An algorithm is proposed for the simulation of pure SU(N) lattice gauge
theories based on Genetic Algorithms(GAs). We apply GAs to SU(2) pure gauge
theory on a 2 dimensional lattice and show the results, the action per
plaquette and Wilson loops, are consistent with those by Metropolis method(MP)s
and Heatbath method(HB)s. Thermalization speed of GAs is especially faster than
the simple MPs.Comment: 3 pages,9 figures,LATTICE98(Algorithm), "Genetic Algorithm for SU(N)
Gauge Theory on a Lattice
Rational expectations and the effects of monetary policy: a guide for the uninitiated
Rational expectations (Economic theory) ; Monetary policy
Brief of Amici Curiae in Support of Appellant, James Townsend v. Midland Funding, LLC
The Consumer Protection Clinic of the University of Maryland Francis King Carey School of Law, filed a Motion to Participate and an Amicus Brief in the case of Townsend v. Midland Funding, LLC. The case presents the question of whether documents created by third party predecessors in interest—usually a bank—may be admitted into evidence when a debt buyer plaintiff does not demonstrate personal knowledge regarding any of the foundational elements which would be required to admit the documents under the business records exception to the hearsay rule. Amici urge the Court to overturn the lower court, and hold that a debt buyer’s documents may not be admitted into evidence without the debt buyer first laying the proper foundation for the business records exception to the hearsay rule. The Clinic was joined by AARP, the National Consumer Law Center, the National Association of Consumer Advocates, and by the Maryland Legal Aid Bureau and Maryland\u27s Public Justice Center. The Brief deals with the problems of data integrity and the lack of competent, reliable evidence in lawsuits filed purchasers of charged off credit card debt, known as debt buyers. The Consumer Protection Clinic and other amici examine due process and professionalism concerns which arise when our courts (primarily Maryland\u27s District Court) do not strictly apply the special evidentiary and procedural rules which exist for small claims actions
Tunneling through Color Glass Condensate and True Black Disks
We discover new vacuum solutions of the JIMWLK equation, which correspond to
center of a gauge group. We improve the color glass condensate (CGC) model by
an explicit usage of a density matrix. Studying scattering of CGC states in an
external color field, we observe that an amplitude is naturally expressed via
group characters. We construct an example that shows how new thin effects may
be potentially observed in peripheral collisions. We prove that at any parton
density a gluonic CGC state does not become a true black disk. We find a wave
function of a true black disk and show that it necessarily contains many
quarks. This result corresponds to the necessity of nonvacuum Reggeon loops in
a formation of a true black disk.Comment: 13 pages, 2 figures, revtex; final version, improved styl
Implications of Lorentz covariance for the guidance equation in two-slit quantum interference
It is known that Lorentz covariance fixes uniquely the current and the
associated guidance law in the trajectory interpretation of quantum mechanics
for spin particles. In the non-relativistic domain this implies a guidance law
for the electron which differs by an additional spin-dependent term from that
originally proposed by de Broglie and Bohm. In this paper we explore some of
the implications of the modified guidance law. We bring out a property of
mutual dependence in the particle coordinates that arises in product states,
and show that the quantum potential has scalar and vector components which
implies the particle is subject to a Lorentz-like force. The conditions for the
classical limit and the limit of negligible spin are given, and the empirical
sufficiency of the model is demonstrated. We then present a series of
calculations of the trajectories based on two-dimensional Gaussian wave packets
which illustrate how the additional spin-dependent term plays a significant
role in structuring both the individual trajectories and the ensemble. The
single packet corresponds to quantum inertial motion. The distinct features
encountered when the wavefunction is a product or a superposition are explored,
and the trajectories that model the two-slit experiment are given. The latter
paths exhibit several new characteristics compared with the original de
Broglie-Bohm ones, such as crossing of the axis of symmetry.Comment: 27 pages including 6 pages of figure
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