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Status |
Confirmed |
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Seminar Series |
SEM-LPTMC |
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Subjects |
cond-mat.mes-hall |
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Date |
Wednesday 4 December 2019 |
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Time |
11:00 |
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Institute |
LPTMC |
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Seminar Room |
Jussieu tower 13-12, 5th floor, room 5-23 |
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Speaker's Last Name |
Rossi |
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Speaker's First Name |
Riccardo |
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Speaker's Email Address |
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Speaker's Institution |
Flatiron Institute, New-York |
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Title |
New diagrammatic Monte Carlo approches to the quantum many-body problem |
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Abstract |
Finding a way to numerically simulate many interacting quantum particles would be of great fundamental and practical value. In this talk, I will discuss a broad class of approaches based on diagrammatic expansions that allows to obtain numerically-exact results in a time polynomially increasing with the inverse of the requested precision. Recent advances allow to include renormalization and non-perturbative information (e.g. Dynamical Mean Field Theory for lattice problems) in the expansion using a succinct, and, most importantly, very efficient, formalism. I will present state-of-the-art numerically-exact results for the doped square-lattice Hubbard model, and the generic efficient code we have developed. |
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