648 citations · 7.5k across the 123 of their papers we have counts for
10 papers · 1 filter
The Standard Model on a D-brane
David Berenstein, Vishnu Jejjala, Robert G. Leigh
We present a consistent string theory model which reproduces the Standard Model, consisting of a D3-brane at a simple orbifold singularity. We study some simple features of the phe…
Unity of Supersymmetry Breaking Models
Robert G. Leigh, Lisa Randall, Riccardo Rattazzi
We examine the models with gauge group U(1)^{k-1}\times\prod_{i=1}^k SU(n_i), which are obtained from decomposing the supersymmetry breaking model of Affleck, Dine and Seiberg cont…
Supersymmetry, Finite Temperature and Gravitino Production in the Early Universe
Robert G. Leigh, Riccardo Rattazzi
We reconsider post-inflation gravitino production, in the context of hidden sector supergravity models. We discuss the possible role of supersymmetry breaking from finite temperatu…
The Strong CP Problem, String Theory and the Nelson-Barr Mechanism
R. G. Leigh
We review recent work on the strong CP problem in the context of realistic string-inspired models. We discuss the various solutions, review the conjecture that CP is generally a ga…
Flavor Symmetries and The Problem of Squark Degeneracy
M. Dine, A. Kagan, R. G. Leigh
If supersymmetry exists at low energies, it is necessary to understand why the squark spectrum exhibits sufficient degeneracy to suppress flavor changing neutral currents. In this…
Supersymmetry and the Nelson-Barr Mechanism
M. Dine, A. Kagan, R. G. Leigh
One possible solution to the strong CP problem is that CP is an exact symmetry, spontaneously broken at some scale. Some years ago, Nelson and Barr suggested a mechanism for obtain…
Hydrodynamic Stability Analysis of Burning Bubbles in Electroweak Theory and in QCD
P. Huet, K. Kajantie, R. G. Leigh +2
Assuming that the electroweak and QCD phase transitions are first order, upon supercooling, bubbles of the new phase appear. These bubbles grow to macroscopic sizes compared to the…
Infrared Effects and Bubble Propagation at the Electroweak Phase Transition
R. G. Leigh
We discuss aspects of poor infrared behaviour of the perturbation expansion for the effective potential of the Higgs mode near the electroweak phase transition, and enlarge on the…
Towards the Theory of Cosmological Phase Transitions
M. Dine, R. Leigh, P. Huet +2
We discuss recent progress (and controversies) in the theory of finite temperature phase transitions. This includes the structure of the effective potential at a finite temperature…
Comments on the Electroweak Phase Transition
M. Dine, R. G. Leigh, P. Huet +2
We report on an investigation of various problems related to the theory of the electroweak phase transition. This includes a determination of the nature of the phase transition, a…