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In our first course on statistical mechanics, we learn that small subsystems equilibrate to the temperature of their surroundings. Surprisingly, their is another option. There are Hamiltonian's, called many-body localized, whose subsystems don't equilibrate even at infinite "temperature." In this talk, I will unpack these statements and explain how quantum circuits and entanglement give us a lens through which we can understand this phenomena. I will then show how we should start thinking about the transition between the many-body localized phase and the more canonical ergodic phase.

\n\nSPEAKER:Bryan Clark, University of Illinois at Urbana-Champaign

141 Loomis

false## Physics Colloquium: "Infinite Temperature Quantum Mechanics: How short quantum circuits lead to the breakdown of statistical physics and other stories about many-body localization"

Speaker |
(sign-up)
Bryan Clark, University of Illinois at Urbana-Champaign |
---|---|

Date: | 1/31/2018 |

Time: | 4 p.m. |

Location: | 141 Loomis |

Event Contact: | Stephanie Johansson 217-300-4241 sjohanss@illinois.edu |

Sponsor: | Department of Physics |

Event Type: | Seminar/Symposium |

In our first course on statistical mechanics, we learn that small subsystems equilibrate to the temperature of their surroundings. Surprisingly, their is another option. There are Hamiltonian's, called many-body localized, whose subsystems don't equilibrate even at infinite "temperature." In this talk, I will unpack these statements and explain how quantum circuits and entanglement give us a lens through which we can understand this phenomena. I will then show how we should start thinking about the transition between the many-body localized phase and the more canonical ergodic phase. |

To request disability-related accommodations for this event, please contact the person listed above, or the unit hosting the event.

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