614 research outputs found
Modular Localization and the Bootstrap-Formfactor Program
We extend the ''modular localization'' principle from free to interacting
theories and test its power for the special class of d=1+1 factorizing models.Comment: 27 pages of Late
Effective Treatment of Severe Hypertension
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/72801/1/j.1751-7117.1999.tb00186.x.pd
Metoprolol succinate therapy associated with erythema multiforme
Metoprolol succinate is a widely used medication for the management of hypertension, heart
failure, and angina. We report the case of a 36-year-old woman who developed erythema
multiforme after administration of a low dose of this drug. She also presented with pruritic
burning pain throughout her body accompanied by chills. While erythema multiforme has been
reported with carvedilol, this is the first observation of metoprolol succinate causing this and
physicians should be aware of this potential, yet rare, side-effect
Varying the Unruh Temperature in Integrable Quantum Field Theories
A computational scheme is developed to determine the response of a quantum
field theory (QFT) with a factorized scattering operator under a variation of
the Unruh temperature. To this end a new family of integrable systems is
introduced, obtained by deforming such QFTs in a way that preserves the
bootstrap S-matrix. The deformation parameter \beta plays the role of an
inverse temperature for the thermal equilibrium states associated with the
Rindler wedge, \beta = 2\pi being the QFT value. The form factor approach
provides an explicit computational scheme for the \beta \neq 2\pi systems,
enforcing in particular a modification of the underlying kinematical arena. As
examples deformed counterparts of the Ising model and the Sinh-Gordon model are
considered.Comment: 34 pages, Latex, 3 Figures, minor change
Stochastic Cooling Overview
The status of stochastic cooling and developments over the years are reviewed
with reference to much of the original work. Both theoretical and technological
subjects are considered.Comment: 10 pages. Includes an extensive bibliograph
Wigner Representation Theory of the Poincare Group, Localization, Statistics and the S-Matrix
It has been known that the Wigner representation theory for positive energy
orbits permits a useful localization concept in terms of certain lattices of
real subspaces of the complex Hilbert -space. This ''modular localization'' is
not only useful in order to construct interaction-free nets of local algebras
without using non-unique ''free field coordinates'', but also permits the study
of properties of localization and braid-group statistics in low-dimensional
QFT. It also sheds some light on the string-like localization properties of the
1939 Wigner's ''continuous spin'' representations.We formulate a constructive
nonperturbative program to introduce interactions into such an approach based
on the Tomita-Takesaki modular theory. The new aspect is the deep relation of
the latter with the scattering operator.Comment: 28 pages of LateX, removal of misprints and extension of the last
section. more misprints correcte
Spin, Statistics, and Reflections, II. Lorentz Invariance
The analysis of the relation between modular PCT-symmetry -- a
consequence of the Unruh effect -- and Pauli's spin-statistics relation is
continued. The result in the predecessor to this article is extended to the
Lorentz symmetric situation. A model \G_L of the universal covering
\widetilde{L_+^\uparrow}\cong SL(2,\complex) of the restricted Lorentz group
is modelled as a reflection group at the classical level. Based
on this picture, a representation of \G_L is constructed from pairs of
modular PCT-conjugations, and this representation can easily be verified to
satisfy the spin-statistics relation
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