7 papers
The gauge invariant effective potential: equilibrium and non-equilibrium aspects
D. Boyanovsky, D. Brahm, R. Holman +1
We propose a gauge invariant formulation of the effective potential in terms of a gauge invariant order parameter, for the Abelian Higgs model. The one-loop contribution at zero an…
Z -> b b-bar Excess from R-Parity Violation
David E. Brahm
The $\Zbb$ excess, $\Zcc$ deficit, and low left-right asymmetry may be explained by a single term $\lam C^c B^c B^{\prime c}$ in the superpotential. This operator violates R-…
Large-N_c Relations Among Isgur-Wise Functions
David E. Brahm, James Walden
We investigate the relations that must hold among baryonic Isgur-Wise functions in the large-N_c limit from unitarity constraints, and compare to those found by Chow using th…
Domain Walls in a FRW Universe
D. Boyanovsky, David E. Brahm, A. Gonzalez-Ruiz +2
We solve the equations of motion for a scalar field with domain wall boundary conditions in a Friedmann-Robertson-Walker (FRW) spacetime. We find (in agreement with Basu and Vilenk…
Thermal Activation Rates in the Chirally Asymmetric Gross-Neveu Model
D. Boyanovsky, David E. Brahm, R. Holman +1
We address the problem of how to incorporate quantum effects into the calculation of finite-temperature decay rates for a metastable state of a quantum field theory. To do this, we…
The Lattice Cutoff for and
David E. Brahm
We analyze the critical line of perturbatively in the bare coupling , by setting the daisy-improved renormalized mass to zero. By comparing to lattice data, we can th…