BEGIN:VCALENDAR PRODID:-//eluceo/ical//2.0/EN VERSION:2.0 CALSCALE:GREGORIAN BEGIN:VEVENT UID:ef7f3e80e79440688dbd2fdb07e39f63 DTSTAMP:20260802T003123Z SUMMARY:From Exceptional Points to Exceptional Bands DESCRIPTION:Abstract \nExceptional points (EPs) are spectral singularities in non-Hermitian systems\, at which individual eigenvalues and eigenvector s become identical. The successful realization of EPs in diverse physical systems\, such as photonics\, acoustics\, cold atoms\, and superconducting circuits\, has sparked great interest in fundamental physics and inspired a wide range of novel applications. However\, as the term “exceptional ” suggests\, EPs are usually isolated spectral points. Consequently\, fu nctionalities rooted in EPs face several inherent limitations\, such as na rrow bandwidth. Here\, we present a generalization of the concept of EPs c haracterized by the coalescence of high-dimensional eigenspaces and overla pped spectra. This condition is denoted as “exceptional deficiency.” W hen this happens\, two eigenspaces of identical but arbitrarily large dime nsions exactly align\, accompanied by the coincidence of their spectra.   Consequently\, the full Hilbert space is highly defective by “missing” half of its span. In the meantime\, the spectrum is entirely composed of EPs. \nThe condition of exceptional deficiency can be reached in a large v ariety of systems. We present its realization in a one-dimensional double- chain lattice. Intriguingly\, the exceptional deficiency is a route to go beyond the bulk-edge correspondence of non-Hermitian skin effects\, which relates nontrivial point-gap topology to the existence of skin modes. \n  Reference\nZhen Li\, Xulong Wang\, Rundong Cai\, Kenji Shimomura\, Congwei Lu\, Zhesen Yang\, Masatoshi Sato\, Guancong Ma\, “Exceptional deficien cy of non-Hermitian systems\,” Nature Physics (2026). DOI: 10.1038/s4156 7-026-03259-7\nProf Guancong Ma\nDepartment of Physics\, Hong Kong Baptist University\, Kowloon Tong\, Hong Kong\, China \nphgcma@hkbu.edu.hk URL:/events/211653/from-exceptional-points-to-exc eptional-bands/ DTSTART;TZID=Europe/London:20260811T140000 DTEND;TZID=Europe/London:20260811T160000 LOCATION:B539 - Floor 5 \, Blackett Building\, South Kensington Campus\, Im perial College London\, London\, SW7 2AZ\, United Kingdom END:VEVENT BEGIN:VEVENT UID:7acbcedff22a8752026290fef1b82666 DTSTAMP:20260802T003123Z SUMMARY:Natural Sciences Showcase 2026 DESCRIPTION:Join a full day of presentations and stimulating discussions wi th the academics and prize-winning PhD students in the Faculty of Natural Sciences and find out about our innovative work. Everybody is welcome! Ple ase register as soon as possible (deadline is 17.00 on 21 September 2026). \n10.00 – 18.00\, SAFB G16 LT (Sir Alexander Fleming Building)\nWelcome coffee from 09.30 in the concourse level 1\n\nDepartmental talks sessions: 10.00 – 16.10 in SAFB G16 LT (coffee breaks in the concourse level 1).\ nPhD students poster competition: 12.30 – 13.40 in SAFB 120-122 (lunch w ill be provided) – ԹϺ staff and students will be able to vote for their favourite poster by Wednesday 23rd September\, 15:00 – posters wi ll be uploaded in our website in early September.\nPanel session: 16.10 – 17.10 in SAFB 120-122.\nAwards from 17.15 with canapés and drinks rec eption in the concourse level 1.\n\nDon’t miss this great opportunity to engage with our academics and postgraduate students. Please see the full programme below:\nProgramme\n10.00 – 10.05 Welcome\nWelcome and opening remarks by the Dean Professor Richard Craster.\n10.05 – 10.35 Centre for Environmental Policy Showcase\n\n10.05 – 10.20: Dr Caroline Howe (Assoc iate Professor) – Beyond the Silos: equity and justice in tackling biodi versity and climate\n10.20 – 10.35: PhD student – Title to be confirme d\n\n10.35 – 11.20 Department of Mathematics Showcase\n\n10.35 – 10.50 : Dr Ed Cohen (Reader in Statistics) – Spatial statistics on manifolds: new mathematical tools for microbial and cell biology.\n10.50 – 11.05: P hD student –  Title to be confirmed\n11.05 – 11.20:  PhD student – Title to be confirmed\n\nCoffee break (11.20 – 11.30)\n11.30 – 12.30 Department of Life Sciences Showcase\n\n11.30 – 11.45: Dr Claudia Contin i (Assistant Professor in Biotechnology and Engineering Biology) – Synth etic Cells: from Soft Matter to Life-Like Behaviours\n11.45 – 12.00: PhD student – Title to be confirmed\n12.00 – 12.15: PhD student – Title to be confirmed\n12.15 – 12.30: PhD student –  Title to be confirmed \n\n12.30 – 13.40 Lunch and Poster session\n13.40 – 14.40 Department o f Chemistry Showcase\n\n13.40 – 13.55: Dr David Ayuso Molinero (Royal So ciety URF – Associate Professor) – Why chiral light can barely tell le ft from right – and how to fix it by shaping it in 3D\n13.55 – 14.10: PhD student – Title to be confirmed\n14.10 – 14.25: PhD student – T itle to be confirmed\n14.25 – 14.40: PhD student – Title to be confirm ed\n\nCoffee break (14.40 – 14.50)\n14.50 – 15.50 Department of Physic s Showcase\n\n14.50 – 15.05: Dr Frank Schindler (Associate Professor in Condensed Matter Theory) – Symmetry and Topology in Quantum Matter\n15.0 5 – 15.20: PhD student – Title to be confirmed\n15.20 – 15.35: PhD s tudent) – Title to be confirmed\n15.35 – 15.50: PhD student – Title to be confirmed\n\n15.50 – 15.55 Closing\nClosing remarks by Professor R ichard Craster.\nCoffee break (15.55 – 16.10)\n16.10 – 17.10 Why Shoul d We Support Curiosity-Driven Research?\nPanel discussion.\nThis year’s panel will focus on Curiosity-Driven Research\, highlighting how fundamen tal science can lead to unexpected and transformative breakthroughs. Four academic members have been invited\, each presenting a compelling example of such research:\n\nDr Niladri Banerjee (Dept. of Physics): Quantum Mecha nics → Semiconductors and Modern Electronics\nProfessor Jason Micklefiel d (Dept. of Chemistry):  CRISPR → Gene-editing Technology\nDr Julie McD onald (Dept. of Life Sciences):  Gut Microbiome research → Clinical app lications and Disease prevention and management\nProfessor Kevin Buzzard ( Dept. of Mathematics): Number Theory → Cryptography\n\n17.15 – 18.00 C anapes reception and prizes \nAwards will be given at 17.30. URL:/events/210483/natural-sciences-showcase-2026 / DTSTART;TZID=Europe/London:20260923T100000 DTEND;TZID=Europe/London:20260923T180000 LOCATION:SAFB G16 LT\, Sir Alexander Fleming Building\, South Kensington Ca mpus\, ԹϺ\, London\, SW7 2AZ\, United Kingdom END:VEVENT BEGIN:VTIMEZONE TZID:Europe/London BEGIN:DAYLIGHT DTSTART:20260811T140000 TZNAME:BST TZOFFSETTO:+0100 TZOFFSETFROM:+0100 END:DAYLIGHT END:VTIMEZONE BEGIN:VTIMEZONE TZID:Europe/London BEGIN:DAYLIGHT DTSTART:20260923T100000 TZNAME:BST TZOFFSETTO:+0100 TZOFFSETFROM:+0100 END:DAYLIGHT END:VTIMEZONE END:VCALENDAR