6,770 research outputs found
Some Additional Solutions of Conformal Turbulence
We made a careful study of Polyakov's Diofantian equations for 2D turbulence
and found several additional CFTs which meet his criterion. This fact implies
that we need further conditions for CFT in order to determine the exponent of
the energy spectrum function.Comment: 7 pages, UT-62
Tachyon condensation and Boundary States in Bosonic String
We discuss tachyon configuration for the unoriented bosonic string theory
which produces a bosonic string theory with SO(32) gauge symmetry in ten
dimensions. It is closely related to the tachyon condensation scenario proposed
by A. Sen. We also give the boundary state description of the tachyon
condensation process, with some emphasis on the r\^ole of orbifold conformal
field theory.Comment: Proceeding of the talk given at YITP workshop ``Tachyon condensation
and boundary state''(October 27-29, 1999), latex fil
Asymptotics of neutron Cooper pair in weakly bound nuclei
Asymptotic form of neutron Cooper pair penetrating to the exterior of nuclear
surface is investigated with the Bogoliubov theory for the superfluid Fermions.
Based on a two-particle Schr\"{o}dinger equation governing the Cooper pair wave
function and systematic studies for both weakly bound and stable nuclei, the
Cooper pair is shown to be spatially correlated even in the asymptotic large
distance limit, and the penetration length of the pair condensate is revealed
to be universally governed by the two-neutron separation energy and
the di-neutron mass
Improved Taylor Expansion method in the Ising model
We apply an improved Taylor expansion method, which is a variational scheme
to the Ising model in two dimensions. This method enables us to evaluate the
free energy and magnetization in strong coupling regions from the weak coupling
expansion, even in the case of a phase transition. We determine the approximate
value of the transition point using this scheme. In the presence of an external
magnetic field, we find both stable and metastable physical states.Comment: 13 pages, 9 figure
- …