3,072 research outputs found
Magnetic Monopole Content of Hot Instantons
We study the Abelian projection of an instanton in as a
function of temperature (T) and non-trivial holonomic twist () of the
Polyakov loop at infinity. These parameters interpolate between the circular
monopole loop solution at T=0 and the static 't Hooft-Polyakov
monopole/anti-monopole pair at high temperature.Comment: 3 pages, LATTICE98(confine), LaTeX, PostScript figures include
Simplicial Chiral Models
Principal chiral models on a d-1 dimensional simplex are introduced and
studied analytically in the large limit. The and
models are explicitly solved. Relationship with standard lattice models and
with few-matrix systems in the double scaling limit are discussed.Comment: 6 pages, PHYZZ
Hybrid Monte Carlo Simulation of Graphene on the Hexagonal Lattice
We present a method for direct hybrid Monte Carlo simulation of graphene on
the hexagonal lattice. We compare the results of the simulation with exact
results for a unit hexagonal cell system, where the Hamiltonian can be solved
analytically.Comment: 5 pages, 4 figure
From Black Holes to Glueballs: The QCD_3 Tensor Glueball at Strong Coupling
A strong coupling calculation of glueball masses based on the duality between
supergravity and Yang-Mills theory is presented. Earlier work is extended to
non-zero spin. Fluctuations in the gravitational metric lead to the 2^{++}
state on the leading Pomeron trajectory with a mass relation: m(0^{++}) <
m(2^{++}) < m(1^{-+}). Contrary to expectation, the mass of our new 0^{++}
state (m^2=5.4573) associated with the graviton is smaller than the mass of the
state (m^2=11.588) from the dilaton, which in fact is exactly
degenerate with the tensor 2^{++}.Comment: 3 pages, 1 figure, Talk at Lattice 99 by R. Browe
Some Comments on Multigrid Methods for Computing Propagators
I make three conceptual points regarding multigrid methods for computing
propagators in lattice gauge theory: 1) The class of operators handled by the
algorithm must be stable under coarsening. 2) Problems related by symmetry
should have solution methods related by symmetry. 3) It is crucial to
distinguish the vector space from its dual space . All the existing
algorithms violate one or more of these principles.Comment: 16 pages, LaTeX plus subeqnarray.sty (included at end),
NYU-TH-93/07/0
The Impact of Family Paradigms, Domestic Constitutions, and International Conventions on Disclosure of an Adopted Person\u27s Identities and Heritage: A Comparative Examination
This article examines the extent to which international law has and will potentially influence the direction of the reform and implementation of adoption disclosure norms. Though it does not yet appear that international law mandates recognition of an absolute right to identifying information when such disclosure is opposed by a birth parent or adoptee, examination of these conventions and the response of the international community underscores the critical importance of identifying information to many adoptees, and a growing movement to afford primacy to their interests
Lifting the Genealogical Veil: A Blueprint for Legislative Reform of the Disclosure of Health-Related Information in Adoption
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