Dynamical stability of a many-body Kapitza pendulum
Dalla Torre, Emanuele G.
MetadataShow full item record
Citation (published version)Roberta Citro, Emanuele G Dalla Torre, Luca D'Alessio, Anatoli Polkovnikov, Mehrtash Babadi, Takashi Oka, Eugene Demler. 2015. "Dynamical stability of a many-body Kapitza pendulum." ANNALS OF PHYSICS, Volume 360, pp. 694 - 710 (17). https://doi.org/10.1016/j.aop.2015.03.027
We consider a many-body generalization of the Kapitza pendulum: the periodically-driven sine–Gordon model. We show that this interacting system is dynamically stable to periodic drives with finite frequency and amplitude. This finding is in contrast to the common belief that periodically-driven unbounded interacting systems should always tend to an absorbing infinite-temperature state. The transition to an unstable absorbing state is described by a change in the sign of the kinetic term in the Floquet Hamiltonian and controlled by the short-wavelength degrees of freedom. We investigate the stability phase diagram through an analytic high-frequency expansion, a self-consistent variational approach, and a numeric semiclassical calculation. Classical and quantum experiments are proposed to verify the validity of our results.
Showing items related by title, author, creator and subject.
Golosov, D. I.; Ruckenstein, A. E. (SPRINGER/PLENUM PUBLISHERS, 1998-08-01)We re-examine the calculation of the transverse spin-diffusion coefficient in a dilute degenerate spin-polarized Fermi gas, for the case of s-wave scattering. The special feature of this limit is that the dependence of the ...
Lane, Kenneth D. (ELSEVIER SCIENCE BV, 1995-09-14)I discuss production and detection at the Tevatron collider of pairs of light (MπT = 100–200GeV) color-singlet technipions that are expected in all nonminimal models of technicolor. Gluon fusion production rates can be as ...
Lane, Kenneth; Eichten, Estia (Elsevier Science BV, 1995-06-15)We construct a prototype of topcolor-assisted technicolor in which, although both top and bottom quarks acquire some mass from extended technicolor, strong U(1) couplings of technifermions are isospin symmetric and all ...