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9 papers · 2 filters
Color Superconductivity in N=2 Supersymmetric Gauge Theories
Masato Arai, Nobuchika Okada
We study vacuum structure of N=2 supersymmetric (SUSY) QCD, based on the gauge group SU(2) with N_f=2 flavors of massive hypermultiplet quarks, in the presence of non-zero baryon c…
An Interpretation of Noncommutative Field Theory in Terms of a Quantum Shift
M. Chaichian, K. Nishijima, A. Tureanu
Noncommutative coordinates are decomposed into a sum of geometrical ones and a universal quantum shift operator. With the help of this operator, the mapping of a commutative field…
On Superstring Disk Amplitudes in a Rolling Tachyon Background
Niko Jokela, Esko Keski-Vakkuri, Jaydeep Majumder
We study the tree level scattering or emission of n closed superstrings from a decaying non-BPS brane in Type II superstring theory. We attempt to calculate generic n-point superst…
First-order supersymmetric sigma models and target space geometry
Andreas Bredthauer, Ulf Lindstrom, Jonas Persson
We study the conditions under which N=(1,1) generalized sigma models support an extension to N=(2,2). The enhanced supersymmetry is related to the target space complex geometry. Co…
Brane Decay from the Origin of Time
Shinsuke Kawai, Esko Keski-Vakkuri, Robert G. Leigh +1
We present a novel scenario where matter in a spacetime originates from a decaying brane at the origin of time. The decay could be considered as a ``Big Bang''-like event at X^0=0.…
Special holonomy sigma models with boundaries
P. S. Howe, U. Lindstrom, V. Stojevic
A study of (1,1) supersymmetric two-dimensional non-linear sigma models with boundary on special holonomy target spaces is presented. In particular, the consistency of the boundary…