6 papers
SU(2) gauge theory with fermions on a semi-simple cubic lattice
Randy Lewis, Shidsa Pourbakhsh, Arnab Pradhan +1
A practical Hamiltonian approach to lattice gauge theories would provide access to several important areas of phenomenology that have been beyond the reach of conventional lattice…
Cosmological Dynamics of the Thermal Scalar Near the Hagedorn Temperature
Arnab Pradhan, Luis Rufino, Scott Watson
We study the cosmological dynamics of the thermal scalar the winding string mode that becomes massless at the Hagedorn transition by coupling it to the string-frame gravi dilaton e…
Cosmological Perturbations from a New Approach to Inflation
Brandon Melcher, Arnab Pradhan, Scott Watson
In a previous paper we proposed a new approach to the beginning of inflation -- a lingering universe. The universe begins in a lingering state with a nearly vanishing Hubble parame…
Symmetries and Anomalies of Hamiltonian Staggered Fermions
Simon Catterall, Arnab Pradhan, Abhishek Samlodia
We review the shift (translation) and time reversal symmetries of Hamiltonian staggered fermions and their connection to continuum symmetries concentrating in particular on the cas…
Gauging staggered fermion shift symmetries
Simon Catterall, Arnab Pradhan
Staggered fermion shift symmetries correspond to translations of the fermion field within the unit cell of a hypercubic lattice. They satisfy an algebra and in four Euclidean dimen…
Waiting for Inflation: A New Initial State for the Universe
Brandon Melcher, Arnab Pradhan, Scott Watson
We propose a cosmological lingering phase for the initial state prior to inflation which would help address the singularity problem of inflation. The universe begins with a constan…