Superstripes and quasicrystals in bosonic systems with hard-soft corona
interactions
- URL: http://arxiv.org/abs/2009.10203v1
- Date: Mon, 21 Sep 2020 22:24:19 GMT
- Title: Superstripes and quasicrystals in bosonic systems with hard-soft corona
interactions
- Authors: Bruno R. de Abreu, Fabio Cinti, and Tommaso Macr\`i
- Abstract summary: We investigate the effect of quantum fluctuations on the phases of bosonic particles with isotropic hard-soft corona interactions.
A rich phase diagram, parametrized by the density of particles, reveals supersolid stripes, kagome and triangular crystals in the low-density regime.
In the high-density limit we observe patterns with 12-fold rotational symmetry compatible with periodic approximants of quasicrystalline phases.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The search for spontaneous pattern formation in equilibrium phases with
genuine quantum properties is a leading direction of current research. In this
work we investigate the effect of quantum fluctuations - zero point motion and
exchange interactions - on the phases of an ensemble of bosonic particles with
isotropic hard-soft corona interactions. We perform extensive path-integral
Monte Carlo simulations to determine their ground state properties. A rich
phase diagram, parametrized by the density of particles and the interaction
strength of the soft-corona potential, reveals supersolid stripes, kagome and
triangular crystals in the low-density regime. In the high-density limit we
observe patterns with 12-fold rotational symmetry compatible with periodic
approximants of quasicrystalline phases. We characterize these quantum phases
by computing the superfluid density and the bond-orientational order parameter.
Finally, we highlight the qualitative and quantitative differences of our
findings with the classical equilibrium phases for the same parameter regimes.
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