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TZID:Europe/Vienna
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DTSTART:20260329T030000
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DTSTAMP:20260929T141101Z
UID:6a1e9cbf7410b628841470@ist.ac.at
DTSTART:20261020T150000
DTEND:20261020T170000
DESCRIPTION:Speaker: David Spitzkopf\nhosted by Robert Seiringer\nAbstract:
  Soft quantum waveguides are quantum mechanical systems in which aparticle
  is confined by an attractive potential in the vicinity of a curve\,rather
  than by a hard boundary or singular interaction. I will discuss twogeomet
 ric perturbations of such systems. The first concerns an array ofpotential
  wells in dimensions two and higher\, where the axial symmetry isdiscrete.
  Shifting finitely many wells along the axis\, even a single one and byan 
 arbitrarily small amount\, produces a bound state below the essentialspect
 rum. The second concerns a twisted soft waveguide in three dimensions\,for
  which I will present a Hardy inequality. It shows that the Hamiltonian is
 subcritical\, so that weak attractive perturbations do not bind.
LOCATION:Office Bldg West / Ground floor / Heinzel Seminar Room (I21.EG.101
 )\, ISTA
ORGANIZER:boosthui@ist.ac.at
SUMMARY:David Spitzkopf: Geometric perturbations of soft quantum waveguides
URL:https://talks-calendar.ista.ac.at/events/6668
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