Browsing Research and Publications - Department of Physics & Astronomy by Subject "Quantum theory"

Browsing Research and Publications - Department of Physics & Astronomy by Subject "Quantum theory"

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  • Alexanian, G.; Pinzul, A.; Stern, Allen (Elsevier, 2001-04-30)
    We construct a star product associated with an arbitrary two-dimensional Poisson structure using generalized coherent states on the complex plane. From our approach one easily recovers the star product for the fuzzy torus, ...
  • Stern, Allen (2008-02-14)
    We construct a perturbative solution to classical noncommutative gauge theory on R^3 minus the origin using the Groenewald-Moyal star product. The result describes a noncommutative point charge. Applying it to the quantum ...
  • Stern, Allen (2009-05-20)
    A relatively simple approach to noncommutative gravity utilizes the gauge theory formulation of general relativity and involves replacing the Lorentz gauge group by a larger group. This results in additional field degrees ...
  • Stern, Allen (2008-09-03)
    We construct perturbative static solutions to the classical field equations of noncommutative U(1) gauge theory for the three cases: (a) space-time noncommutativity, (b) space-space noncommutativity, and (c) both (a) and ...
  • Stern, Allen; Balachandran, A. P.; Borchardt, S.; Chang, S. S.; Stern, A.; Cahalan, R.; Ramachandran, R.; Rupertsberger, H. (American Physical Society, 1978-02-15)
    A semiclassical approximation derived directly from the Feynman path integral is employed in the study of electric-charge-magnetic-monopole scattering. We show that this approximation, unlike perturbation theory, is ...
  • Eilam, G.; Klabucar, D.; Stern, Allen (1986-03-31)
    We find a spherically symmetric solution to the gauged SU(2)L ⊗ SU(2)R chiral model. It corresponds to a new classical solution to the Weinberg-Salam model in the limit of infinite self-coupling and sin^2θW = 0. It has an ...
  • Pinzul, A.; Stern, Allen (Elsevier, 2004-07-22)
    We exploit the reparametrization symmetry of a relativistic free particle to impose a gauge condition which upon quantization implies space–time noncommutativity. We show that there is an algebraic map from this gauge back ...
  • Gupta, K.; Stern, Allen (1991-10-15)
    We examine the dynamics of N spinning particles in 2+ 1 gravity, and obtain an effective Lagrangian description for the particles by eliminating the dreibeins and spin connections from the theory. The resulting equations ...
  • Bimonte, G.; Stern, Allen; Vitale, P. (1996-07-01)
    We reformulate the Hamiltonian approach to lattice gauge theories such that, at the classical level, the gauge group does not act canonically, but instead as a Poisson-Lie group. At the quantum level, the symmetry gets ...

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