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X-ORIGINAL-URL:https://iqus.uw.edu/
X-WR-CALNAME:IQuS
X-WR-CALDESC:InQubator for Quantum Simulation
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UID:MEC-ccb0989662211f61edae2e26d58ea92f@iqus.uw.edu
DTSTART:20210426T220000Z
DTEND:20210426T230000Z
DTSTAMP:20210425T195200Z
CREATED:20210425
LAST-MODIFIED:20210429
PRIORITY:5
SEQUENCE:0
TRANSP:OPAQUE
SUMMARY:Entanglement in Quantum Field Theories
DESCRIPTION:Martin Savage, UW\n\nI will discuss entanglement in quantum field theory, focused on results obtained in lattice massless, non-interacting scalar field theory and implications for low-energy effective field theories … Phys.Rev.D 103 (2021) 6, 065007, e-Print: 2008.03647 [quant-ph] and e-Print: 2103.14999 [hep-th]. In particular, disjoint regions of the latticized, massless scalar field vacuum become separable at large distances beyond the entanglement sphere, a distance that extends to infinity in the continuum limit. Through numerical calculations in 1-, 2- and 3-dimensions, the radius of an entanglement sphere is found to be determined by the highest momentum mode of the field supported across the diameter, d, of two identical regions. As a result, the long-distance behavior of the entanglement is determined by the short-distance structure of the field. Effective field theories (EFTs), describing a system up to a given momentum scale Λ, are expected to share this feature, with regions of the EFT vacuum separable (or dependent on the UV-completion) beyond a distance proportional to Λ. The smallest non-zero value of the entanglement negativity supported by the field at large distances is conjectured to be ∼ exp(-Λd), independent of the number of spatial dimensions. This phenomenon may be manifest in perturbative QCD processes.\n
URL:https://iqus.uw.edu/events/entanglement-in-quantum-field-theories/
ORGANIZER;CN=Alessandro Roggero:MAILTO:roggero@uw.edu
CATEGORIES:Seminars
LOCATION:Cyber Space
ATTACH;FMTTYPE=image/jpeg:https://iqus.uw.edu/wp-content/uploads/2021/03/Nega_preprint.jpg
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