BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//SFP Alpes - ECPv6.16.4//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-ORIGINAL-URL:https://sfp-alpes.fr
X-WR-CALDESC:Évènements pour SFP Alpes
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:Europe/Paris
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20250330T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20251026T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20260329T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20261025T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20270328T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20271031T010000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260624T100000
DTEND;TZID=Europe/Paris:20260624T110000
DTSTAMP:20260618T145607
CREATED:20260618T125124Z
LAST-MODIFIED:20260618T125124Z
UID:10000202-1782295200-1782298800@sfp-alpes.fr
SUMMARY:Mucio A. CONTINENTINO (Centro Brasileiro de Pesquisas Físicas\, Rio de Janeiro\, Brazil)
DESCRIPTION:Dehybridization transition in multi-band systems: a renormalization group approach \nRésumé : \nIn strongly correlated multi-band systems\, such as transition metal intermetallics\, heavy fermions\, and Kondo insulators\, electron-electron interactions lead to the damping of electronic quasiparticles at finite temperatures. This phenomenon results in an effective dehybridization between the electrons in the large conduction band and those in the narrow\, correlated band. The dehybridization effect has been employed to explain the transport properties of intermetallics and the results of angle-resolved photoemission spectroscopy (ARPES) experiments on heavy fermions at sufficiently high temperatures (1). Recent insights from the theory of non-Hermitian systems provide a novel perspective on this problem. In this work\, we adopt this viewpoint through a renormalization group (RG) approach. We derive RG equations for a one-dimensional two-band model to identify the exceptional points of this system and to characterize its topological properties in the presence of dissipation. Our findings reveal that for a non- trivial topological sp-chain\, dehybridization can be interpreted as a topological phase transition\, characterized by critical exponents that we calculate. By employing a parametrization of the self-energy in a strongly correlated system\, computed numerically\, we investigate the temperature dependence of the lifetime of heavy quasiparticles. From these results\, a characteristic temperature related to dehybridization emerges. We discuss whether this temperature represents a new energy scale or if it is associated with the Kondo or coherence temperatures in the phase diagram of heavy fermions [2].\n\nReferences\n1. C. Adriano\, F. Rodolakis\, P. F. S. Rosa\, F. Restrepo\, M. A. Continentino\, Z. Fisk\, J. C. Campuzano\, and P. G. Pagliuso\, Unveiling the hybridization gap in Ce2RhIn8 heavy fermion compound\, arXiv:1502.02544 [cond-mat.str-el]\, https://doi.org/10.48550/arXiv.1502.02544\n2. Dehybridization transition in Kondo insulators and heavy fermions\, arXiv:2505.04730. https://doi.org/10.48550/arXiv.2505.04730\n\n_\n\nContact : claudine.lacroix@neel.cnrs.fr \n\n\n\n\n 
URL:https://sfp-alpes.fr/event/mucio-a-continentino-centro-brasileiro-de-pesquisas-fisicas-rio-de-janeiro-brazil/
LOCATION:CNRS – Salle Rémy Lemaire (K223)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260624T110000
DTEND;TZID=Europe/Paris:20260624T120000
DTSTAMP:20260618T145607
CREATED:20260618T094702Z
LAST-MODIFIED:20260618T094702Z
UID:10000200-1782298800-1782302400@sfp-alpes.fr
SUMMARY:Louisa CASTEL (LPMMC)
DESCRIPTION:TITRE A VENIR\n_ \nConctact : pierre.nataf@lpmmc.cnrs.fr
URL:https://sfp-alpes.fr/event/louisa-castel-lpmmc/
LOCATION:LPMMC – salle Roger Maynard (G421)\, CNRS - LPMMC 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260624T113000
DTEND;TZID=Europe/Paris:20260624T123000
DTSTAMP:20260618T145607
CREATED:20260618T095054Z
LAST-MODIFIED:20260618T095054Z
UID:10000201-1782300600-1782304200@sfp-alpes.fr
SUMMARY:Mathias GODEFROI (LPMMC)
DESCRIPTION:TITRE A VENIR\n_ \nContact : pierre.nataf@lpmmc.cnrs.fr
URL:https://sfp-alpes.fr/event/mathias-godefroi-lpmmc/
LOCATION:LPMMC – salle Roger Maynard (G421)\, CNRS - LPMMC 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
END:VCALENDAR