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PRODID:Mathematics Seminar Calendar
BEGIN:VEVENT
UID:20230321T182055-32597@math.msu.edu
DTSTAMP:20230321T182055Z
SUMMARY:Driving open quantum systems to a subspace: stability and large deviations.
DESCRIPTION:Speaker\: Peixue Wu, University of Illinois Urbana Champaign\r\nAbstract: Preparation of entangled states via engineered open quantum systems is proven to be successful. In our work, we initiate a study of engineered open quantum systems which drive the states to a subspace. In other word, our system will be non-ergodic. We prove some stability results and large deviation phenomenon in this setting, under some symmetry condition on the Liouvillian. This is joint work with Marius Junge and Nicholas Laracuente.
LOCATION:C304 Wells Hall
DTSTART:20230314T143000Z
DTEND:20230314T153000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=32597
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BEGIN:VEVENT
UID:20230321T182055-32617@math.msu.edu
DTSTAMP:20230321T182055Z
SUMMARY:Properties of the Actions and von Neumann algebras of Thompson-Like Groups from Cloning Systems
DESCRIPTION:Speaker\: Patrick DeBonis, Purdue University\r\nCloning systems are a method for generalizing Thompson's groups, for example $V_d$, that result in a family of groups, $\mathcal{T}_d(G_*)$, whose group von Neumann algebras have been intensely studied by Bashwinger and Zarmesky in recent years. We consider the group actions of a large class of $\mathcal{T}_d(G_*)$ and show they are stable, that is, $G \sim_{OE} G \times \mathbb{Z}.$ As a corollary, we answer Bashwinger and Zaremsky question about when $\mathcal{T}_d(G_*)$ is a McDuff Group in the sense of Deprez and Vaes. As a contrasting result, we show $L(V_d)$ is a prime II$_1$ factor. This is joint work with Rolando de Santiago and Krishnendu Khan.
LOCATION:C304 Wells Hall
DTSTART:20230321T143000Z
DTEND:20230321T152000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=32617
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BEGIN:VEVENT
UID:20230321T182055-32598@math.msu.edu
DTSTAMP:20230321T182055Z
SUMMARY:Real Space Quantum Optics in Localized and Periodic Media
DESCRIPTION:Speaker\: Joe Kraisler, Columbia University\r\nWe will start by introducing a real space model of a scalar electromagnetic field coupled to a continuum collection of two level atoms. From this we will obtain a pair of nonlocal partial differential equations describing the energy eigenstates that have at most one photon present in the field. The rest of the talk will discuss spectral results in two different types of atomic distributions. \r\n\r\n1. Compactly supported densities: In this setting the atoms are contained in a finite region in space. We will state necessary and sufficient conditions for the existence of eigenstates, as well as an upper bound on the number of such states.\r\n2. Periodic densities: In this setting the atoms exhibit the symmetries of a lattice. We will present a decomposition of the continuous spectrum into spectral bands and state a corresponding structure theorem.\r\n\r\nThis work is joint with Erik Hiltunen, John Schotland, and Michael Weinstein.
LOCATION:C304 Wells Hall
DTSTART:20230404T143000Z
DTEND:20230404T153000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=32598
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BEGIN:VEVENT
UID:20230321T182055-32616@math.msu.edu
DTSTAMP:20230321T182055Z
SUMMARY:TBA
DESCRIPTION:Speaker\: Eric Roon, University of Arizona\r\nTBA
LOCATION:C304 Wells Hall
DTSTART:20230411T143000Z
DTEND:20230411T153000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=32616
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BEGIN:VEVENT
UID:20230321T182055-32595@math.msu.edu
DTSTAMP:20230321T182055Z
SUMMARY:TBA
DESCRIPTION:Speaker\: Shiwen Zhang, University of Massachusetts Lowell\r\n
LOCATION:C304 Wells Hall
DTSTART:20230417T143000Z
DTEND:20230417T153000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=32595
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BEGIN:VEVENT
UID:20230321T182055-31575@math.msu.edu
DTSTAMP:20230321T182055Z
SUMMARY:TBA
DESCRIPTION:Speaker\: Alex Bols, Caltech\r\n
LOCATION:C304 Wells Hall
DTSTART:20230425T143000Z
DTEND:20230425T153000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=31575
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