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UID:1-286@lptms.universite-paris-saclay.fr
DTSTART:20140916T110000Z
DTEND:20140916T110000Z
DTSTAMP:20140915T072213Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-kinya-takahashi/
SUMMARY:Séminaire du LPTMS : Kin'ya Takahashi - LPTMS\, salle 201\, 2ème 
 étage\, Bât 100\, Campus d'Orsay - 16 Sep 14 11:00
DESCRIPTION:Competition between instanton and non-instanton tunneling in mu
 ltidimensional systems\nKin'ya Takahashi\, Kyushu Institute of Technology\
 nThere are two types of tunneling mechanisms working for mutli-dimensional
  barrier tunneling. One is well known instanton which induces barrier pene
 tration. The other is non-instanton tunneling\, in which tunneling particl
 es go over a barrier top. It is explained by multiphoton assisted tunnelin
 g\, while from the semiclassical view point it is interpreted by ’Stable
 -unstable manifold guided tunneling\, say SUMGT as an abbreviation.In this
  talk\, we investigate instanton type tunneling and non-instanton tunnelin
 g from the view points of quantum and semiclassical dynamics.Taking period
 ically perturbed step potential and barriers as models\, we give the inter
 pretation between quantum and semiclassical explanations of non-instanton 
 tunneling and we discuss the problem: How do the transitions between insta
 nton and non-instanton tunneling occur with change of the perturbation fre
 quency? Further taking a periodically perturbed resonance potential\, we c
 onsider the problem: How does the resonance affect the properties of insta
 nt type tunneling and non-instanton tunneling?
LOCATION:LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay\, 15 
 Rue Georges Clemenceau\, Orsay\, 91405\, France
GEO:48.698185;2.181768
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=15 Rue Georges Clemenceau\,
  Orsay\, 91405\, France;X-APPLE-RADIUS=100;X-TITLE=LPTMS\, salle 201\, 2è
 me étage\, Bât 100\, Campus d'Orsay:geo:48.698185,2.181768
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