19 citations · 48 across the 11 of their papers we have counts for
11 papers
Coupling between a deuteron and a lattice
P. L. Hagelstein, I. U. Chaudhary
We recently put forth a new fundamental lattice Hamiltonian based on an underlying picture of electrons and deuterons as elementary Dirac particles. Within this model there appears…
Kinematic mass of a composite in the many-particle Dirac model
Peter L Hagelstein, Irfan U Chaudhary
We are interested in the energy-momentum relation for a moving composite in relativistic quantum mechanics in many-particle Dirac models. For a manifestly covariant model one can a…
Including nuclear degrees of freedom in a lattice Hamiltonian
Peter L. Hagelstein, Irfan U. Chaudhary
Motivated by many observations of anomalies in condensed matter systems, we consider a new fundamental Hamiltonian in which condensed matter and nuclear systems are described initi…
Excitation transfer in two two-level systems coupled to an oscillator
Peter L. Hagelstein, Irfan U. Chaudhary
We consider a generalization of the spin-boson model in which two different two-level systems are coupled to an oscillator, under conditions where the oscillator energy is much les…
Multiphoton Bloch-Siegert shifts and level-splittings in a three-level system
Peter L. Hagelstein, Irfan U. Chaudhary
In previous work we studied the spin-boson model in the multiphoton regime, using a rotation that provides a separation between terms that contribute most of the level energies awa…
Electron mass shift in nonthermal systems
Peter L Hagelstein, Irfan U Chaudhary
The electron mass is known to be sensitive to local fluctuations in the electromagnetic field, and undergoes a small shift in a thermal field. It was claimed recently that a very l…