The existence of Macroscopic unique states

Huaxin Lin ֻ  (East China Normal University)

14:00-15:00, March 25, 2024   Science Building A503




Abstract:

Let H be an infinite dimensional separable Hilbert space and B(H) the C*-algebra of bounded operators on H. Suppose that T1,T2,...,Tn are self-adjoint operators in B(H). We show that, if commutators [Ti,Tj] are sufficiently small in norm, then ``Approximately Macroscopically Unique" states always exist for any values in a synthetic spectrum of the n-tuple of self-adjoint operators. This is achieved under the circumstance for which the n-tuple may not be approximated by commuting ones. This answers a question proposed by David Mumford for measurements in quantum theory. If commutators are not small in norm but small modulo compact operators, then ``Approximate Macroscopic Uniqueness" states also exist.

About the speaker:

ֻ½ǹӴ֮һҪоC*-ࡣֽ90˾гδHalmos⣬2000Ժ벢չC*-𵽺õļۣ֤˼C*-ķඨ״λڼ򵥳ṹ㷺C*-࣬ƶC*-۵ķչ2014˺C*-ġElliott족ֽѧ׽ʿ2005ϺпѧһȽ1997ŷӴᡢ2014ѧҴᣨICMӴǻᱨ棬2015CBMSAMSNSFرʮϵн2018ѧҴ档2023׽ʻѧᣨInternational Congress of Basic Science, ICBS䷢ǰؿѧ

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