51 citations · 289 across the 32 of their papers we have counts for
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Variational approach to atom-membrane dynamics
Dennis P. Clougherty
Using the Dirac-Frenkel variational principle, a time-dependent description of the dynamics of a two-level system coupled to a bosonic bath is formulated. The method is applied to…
Comment on "Theory of phonon-assisted adsorption in graphene: Many-body infrared dynamics''
Dennis P. Clougherty
Two approximations used by Sengupta [Phys. Rev. B {\bf 100}, 075429 (2019)] in numerically computing the adsorption rate of cold hydrogen atoms on suspended graphene are critically…
Quantum and thermal fluctuations of a thin elastic plate
Dennis P. Clougherty, Eliot Heinrich
We consider a Hamiltonian description of the vibrations of a clamped, elastic circular plate. The Hamiltonian of this system features a potential energy with two distinct contribut…
Infrared Problem in Cold Atom Quantum Physisorption on 2D Materials
Sanghita Sengupta, Dennis P. Clougherty
Results from four different approximations to the phonon-assisted quantum adsorption rate for cold atoms on a 2D material are compared and contrasted: (1) a loop expansion (LE) bas…
Infrared problem in quantum acoustodynamics at finite temperature
Dennis P. Clougherty
The phonon-assisted sticking rate of slow moving atoms impinging on an elastic membrane at nonzero temperature is studied analytically using a model with linear atom-phonon interac…
Radiative Corrections to Quantum Sticking on Graphene
Sanghita Sengupta, Dennis P. Clougherty
We study the sticking rate of atomic hydrogen to suspended graphene using four different methods that include contributions from processes with multiphonon emission. We compare the…