Excitations in Hot Non-Commutative Theories

Abstract

We study the dispersion relation for scalar excitations in supersymmetric, non-commutative theories at finite temperature. In N=4 Yang-Mills the low momenta modes have superluminous group velocity. In the massless Wess-Zumino model the minimum of the dispersion relation is at non zero momentum for temperatures above T_0 ~ (g θ)^(-1\2). We briefly comment on N=2 Yang-Mills at finite density.

16 pages, 4 figures, harvmac

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• Noncommutative Vortex Solitons
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• Superluminal Noncommutative Photons
• Instability of Non-Commutative SYM Theories at Finite Temperature
• Perturbative Instabilities on the Non-Commutative Torus, Morita Duality and Twisted Boundary Conditions
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• Paramagnetic dominance, the sign of the beta function and UV/IR mixing in non-commutative U(1)
• Nonplanar Anomalies in Noncommutative Theories and the Green-Schwarz Mechanism
• Morita Duality and Large-N Limits
• UV/IR mixing and the Goldstone theorem in noncommutative field theory
• Noncommutative Black-Body Radiation: Implications On Cosmic Microwave Background
• Position-dependent noncommutative products: classical construction and field theory
• The BRS invariance of noncommutative U(N) Yang-Mills theory at the one-loop level
• The index of the overlap Dirac operator on a discretized 2d non-commutative torus
• Volume independence for Yang-Mills fields on the twisted torus
• Effective Finite Temperature Partition Function for Fields on Non-Commutative Flat Manifolds
• General massive one-loop off-shell three-point functions
• On space-time noncommutative theories at finite temperature
• Probability distribution of the index in gauge theory on 2d non-commutative geometry
• The static effective action for non-commutative QED at high temperature
• Transport equation and hard thermal loops in noncommutative Yang-Mills theory
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• Hard Thermal Effects in Noncommutative U(N) Yang-Mills Theory
• Transport equation for the photon Wigner operator in non-commutative QED
• Twisted invariances of noncommutative gauge theories
• Nonequilibrium Dynamics in Noncommutative Spacetime
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• A New Lorentz Violating Nonlocal Field Theory From String-Theory
• A Note on UV/IR Mixing and Non-Commutative Instanton Calculus
• On space-time noncommutative U(1) model at high temperature