19 citations · 52 across the 12 of their papers we have counts for
6 papers · 1 filter
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…
Multiphoton Bloch-Siegert shifts and level-splittings in spin-one systems
Peter L. Hagelstein, Irfan U. Chaudhary
We consider a spin-boson model in which a spin 1 system is coupled to an oscillator. A unitary transformation is applied which allows a separation of terms responsible for the Bloc…
Level Splitting in Association with the Multiphoton Bloch-Siegert Shift
Peter L. Hagelstein, Irfan U. Chaudhary
We present a unitary equivalent spin-boson Hamiltonian in which terms can be identified which contribute to the Bloch-Siegert shift, and to the level splittings at the anticrossing…
Bloch-Siegert shift for multiphoton resonances
Peter L. Hagelstein, Irfan U. Chaudhary
Recently there has been theoretical and experimental interest in Bloch-Siegert shifts in an intense photon field. A perturbative treatment becomes difficult in this multiphoton reg…