187 citations · 2.2k across the 82 of their papers we have counts for
84 papers
Calculation of Dynamical Response Functions Using a Bound-state Method
Niels R. Walet, Jagjit Singh, Johannes Kirscher +3
We investigate a method to extract response functions (dynamical polarisabilities) directly from a bound-state approach applied to calculations of perturbation-induced reactions. T…
Optical potentials, retarded Green's functions and nonorthogonality
Michael C. Birse
An approach is outline to constructing an optical potential that includes the effects of antisymmetry and target recoil. it is based on the retarded Green's function, which could m…
Thermodynamics of Bose gases from functional renormalization with a hydrodynamic low-energy effective action
Felipe Isaule, Michael C. Birse, Niels R. Walet
The functional renormalization group for the effective action is used to construct an effective hydrodynamic description of weakly interacting Bose gases. We employ a scale-depende…
Renormalisation-group analysis of electromagnetic couplings in the pionless effective field theory
A. N. Kvinikhidze, M. C. Birse
The Wilsonian renormalisation group is applied to a system of two nonrelativistic particles interacting via short-range forces and coupled to an external EM field. By demanding tha…
Application of the functional renormalization group to Bose gases: from linear to hydrodynamic fluctuations
Felipe Isaule, Michael C. Birse, Niels R. Walet
We study weakly interacting Bose gases using the functional renormalization group with a hydrodynamic effective action. We use a scale-dependent parametrization of the boson fields…
Comment on "Nucleon spin-averaged forward virtual Compton tensor at large Q^2"
Michael C. Birse, Judith A. McGovern
In recent work, Hill and Paz apply the operator product expansion to forward doubly virtual Compton scattering. The resulting large- form of the amplitude is comp…