Entanglement entropy generation in isolated systems and in continually measured ones

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• Adam Nahum (Oxford)
• Thursday 01 November 2018, 13:45-15:00
• Theory Library.

If you have a question about this talk, please contact Mike Gunn.

Isolated quantum many-body systems, if initialised in states of low entanglement, typically evolve towards states of high (volume law) entanglement.

I will first give a coarse-grained description for entanglement production obtained using simple minimal models (quantum circuits made up of randomly chosen gates). This description involves a minimal ‘membrane’ in spacetime.

In the second part of the talk I will discuss what happens to entanglement generation when the entangling unitary evolution is interspersed with projective measurements, which tend to disentangle degrees of freedom. I will show that there is a phase transition as a function of the rate of measurements and that this phase transition is closely related to classical percolation.

This talk is part of the Theoretical Physics Seminars series.

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• Bham Talks
• Theoretical Physics Seminars
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