202 citations · 237 across the 7 of their papers we have counts for
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Creation of Bound Half-Fermion Pairs by Solitons
Sapan Karki, Brett Altschul
In the presence of topologically nontrivial bosonic field configurations, the fermion number operator may take on fractional eigenvalues, because of the existence of zero-energy fe…
Perturbative Aspects of CPT-Even Lorentz-Violating Scalar Chromodynamics
B. Altschul, L. C. T. Brito, J. C. C. Felipe +3
In this work, we formulate the theory of Lorentz-violating scalar Quantum Chromodynamics with an arbitrary non-Abelian gauge group. This theory belongs to the class of models encom…
Aspects of the Equivalence Between the and Terms in Lorentz-Violating Quantum Field Theory
Sapan Karki, Brett Altschul
It is known that in Lorentz-violating effective field theory, there is a classical equivalence between certain coefficients ( and ), in spite of the fact that the operators t…
Three- and Four-Point Functions in CPT-Even Lorentz-Violating Scalar QED
B. Altschul, L. C. T. Brito, J. C. C. Felipe +3
The renormalization of quantum field theories usually assumes Lorentz and gauge symmetries, besides the general restrictions imposed by unitarity and causality. However, the set of…
Renormalization Scheme Dependence of -Functions In Lorentz-Violating Quantum Field Theory
Sapan Karki, Brett Altschul
Effective quantum field theories that allow for the possibility of Lorentz symmetry violation can sometimes also include redundancies of description in their Lagrangians. Explicit…
Problems with Lorentz Violation Originating From a Cosmologically Varying Pseudoscalar Field
Sapan Karki, Brett Altschul
Lorentz- and CPT-violating models of electrodynamics with Chern-Simons terms are typically plagued by various sorts of instabilities. However, when the Chern-Simons term arises fro…