%0 Book Section %1 statphys23_1105 %A Michel, F. %A Evertz, H.G. %A Pippan, P. %B Abstract Book of the XXIII IUPAP International Conference on Statistical Physics %C Genova, Italy %D 2007 %E Pietronero, Luciano %E Loreto, Vittorio %E Zapperi, Stefano %K montecarlo phonons quantum spin-peierls statphys23 topic-8 %T Phonon simulations with arbitrary dispersions %U http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=1105 %X We describe a new Quantum Monte Carlo method that allows the efficient simulation of phonons with arbitrary bare dispersion, coupled to spins in any dimension,or to 1d electrons. We examine the spin Peierls transition in 1d in the case of optical phonons and of acoustical phonons and show that it occurs at the same coupling. Detailed phonon spectra exhibit both a central peak and softening, depending on the bare phonon frequency at momentum $\pi$. In 2d we examine the stripe pattern of coupled chains. We contrast the behavior of spin-phonon systems to that of coupled electrons and phonons.

@incollection{statphys23_1105, abstract = {We describe a new Quantum Monte Carlo method that allows the efficient simulation of phonons with arbitrary bare dispersion, coupled to spins in any dimension,or to 1d electrons. We examine the spin Peierls transition in 1d in the case of optical phonons and of acoustical phonons and show that it occurs at the {\it same} coupling. Detailed phonon spectra exhibit both a central peak and softening, depending on the bare phonon frequency at momentum $\pi$. In 2d we examine the stripe pattern of coupled chains. We contrast the behavior of spin-phonon systems to that of coupled electrons and phonons.}, added-at = {2007-06-20T10:16:09.000+0200}, address = {Genova, Italy}, author = {Michel, F. and Evertz, H.G. and Pippan, P.}, biburl = {https://www.bibsonomy.org/bibtex/2827573e3e32de763c5adba49e7bf987a/statphys23}, booktitle = {Abstract Book of the XXIII IUPAP International Conference on Statistical Physics}, editor = {Pietronero, Luciano and Loreto, Vittorio and Zapperi, Stefano}, interhash = {80c227b31924c1756bff722841b487ab}, intrahash = {827573e3e32de763c5adba49e7bf987a}, keywords = {montecarlo phonons quantum spin-peierls statphys23 topic-8}, month = {9-13 July}, timestamp = {2007-06-20T10:16:39.000+0200}, title = {Phonon simulations with arbitrary dispersions}, url = {http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=1105}, year = 2007 }