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SUMMARY:Causal aspects of quantum information in quantum gravity - Alex Ma
 y\, Stanford University
DTSTART:20230118T140000Z
DTEND:20230118T150000Z
UID:TALK195271@talks.cam.ac.uk
CONTACT:Sergii Strelchuk
DESCRIPTION:Quantum information science was initially motivated by questio
 ns about information processing. For example\, what are the consequences o
 f quantum mechanics for computation? Or for cryptography? More recently\, 
 quantum information has also become a perspective through which we can stu
 dy questions in theoretical physics more broadly\, including in condensed 
 matter and quantum gravity. While quantum information considers the constr
 aints of quantum mechanics\, there are additional constraints on informati
 on implied by relativity. In particular\, it is impossible to send informa
 tion faster than the speed of light. In this talk\, I consider constraints
  on information processing imposed by quantum mechanics and relativity tog
 ether\, and the consequences of these constraints for quantum gravity. Doi
 ng so reveals novel aspects of how gravitational degrees of freedom can be
  recorded into a quantum mechanical system\, and how an extra dimension ca
 n be recorded into ``holographic'' field theories.
LOCATION:Both in-person (at MR2\, DAMTP) and online (details to be sent by
  email)
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