%0 Journal Article
%A Botzung, T.
%A Hagenmüller, D.
%A Masella, G.
%A Dubail, J.
%A Defenu, N.
%A Trombettoni, A.
%A Pupillo, G.
%T Effects of energy extensivity on the quantum phases of long-range interacting systems
%J Physical review / B
%V 103
%N 15
%@ 1098-0121
%C Woodbury, NY
%I Inst.
%M FZJ-2021-06108
%P 155139
%D 2021
%X We investigate the ground state properties of one-dimensional hard-core bosons interacting via a variable long-range potential using the density matrix renormalization group. We show that restoring energy extensivity in the system, which is done by rescaling the interaction potential with a suitable size-dependent factor known as Kac's prescription, has a profound influence on the low-energy properties in the thermodynamic limit. While an insulating phase is found in the absence of Kac's rescaling, the latter leads to a new metallic phase that does not fall into the conventional Luttinger liquid paradigm. We discuss a scheme for the observation of this new phase using cavity-mediated long-range interactions with cold atoms. Our findings raise fundamental questions on how to study the thermodynamics of long-range interacting quantum systems.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000646763900001
%R 10.1103/PhysRevB.103.155139
%U https://juser.fz-juelich.de/record/904538