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of 169
pro vyhledávání: '"Vitiello, S. A."'
Charged quasiparticles dressed by the low excitations of an electron gas, constitute one of the fundamental pillars for understanding quantum many-body effects in some materials. Quantum simulation of quasiparticles arising from atom-ion hybrid syste
Externí odkaz:
http://arxiv.org/abs/2401.05324
The properties of cold Bose gases at unitarity have been extensively investigated in the last few years both theoretically and experimentally. In this Letter we use a family of interactions tuned to two-body unitarity and very weak three-body binding
Externí odkaz:
http://hdl.handle.net/10150/626282
http://arizona.openrepository.com/arizona/handle/10150/626282
http://arizona.openrepository.com/arizona/handle/10150/626282
Autor:
Freitas, William, Vitiello, S. A.
Publikováno v:
Quantum 7, 1209 (2023)
We introduce a neural network-based approach for modeling wave functions that satisfy Bose-Einstein statistics. Applying this model to small $^4He_N$ clusters (with N ranging from 2 to 14 atoms), we accurately predict ground state energies, pair dens
Externí odkaz:
http://arxiv.org/abs/2302.00599
Publikováno v:
SciPost Phys. Core 6, 031 (2023)
We investigate strongly correlated many-body systems composed of bosons and fermions with a fully quantum treatment using the path-integral ground state method, PIGS. To account for the Fermi-Dirac statistics, we implement the fixed-node approximatio
Externí odkaz:
http://arxiv.org/abs/2207.12294
Publikováno v:
Phys. Rev. A 104, 043313 (2021)
Quantum Monte Carlo techniques are employed to study the properties of polarons in an ultracold Fermi gas, at $T= 0,$ and in the unitary regime using both a zero-range model and a square-well potential. For a fixed density, the potential range is var
Externí odkaz:
http://arxiv.org/abs/2110.13099
Publikováno v:
In Utilities Policy August 2022 77
A shadow wave function with an explicit symmetric kernel is introduced. As a consequence the atoms exchange in the system is enhanced. Basic properties of this class of trial functions are kept and quantities it can describe are easily estimated. The
Externí odkaz:
http://arxiv.org/abs/1705.07170
Autor:
Zampronio, V., Vitiello, S. A.
Publikováno v:
Phys. Rev. B 99, 045145 (2019)
The kinetic energy is estimated for the ground-state of liquid $^3$He at equilibrium density. The obtained value for this quantity, $10.16\pm0.05$ K/atom at density $0.0163~\mbox{\AA}$, is in agreement with most of the experimental data found in the
Externí odkaz:
http://arxiv.org/abs/1703.07412
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An ultracold Fermi atomic gas at unitarity presents universal properties that in the diluted limit can be well described by a contact interaction. By employing a guide function with correct boundary conditions and making simple modifications to the s
Externí odkaz:
http://arxiv.org/abs/1506.00039