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SUMMARY:Lattice fermions on anisotropic lattices
DTSTART:20260629T123000Z
DTEND:20260629T143000Z
DTSTAMP:20260626T021400Z
UID:indico-event-18159@indico.global
DESCRIPTION:Speakers: Johannes Heinrich Weber (Technische Universität Dar
 mstadt)\n\nDoubled lattice fermions\, e.g. minimally doubled fermions or s
 taggered fermions\, may play a key role in understanding QCD thermodynamic
 s and in-medium spectroscopy due to their small cutoff effects\, good chir
 al properties\, and strict locality. Yet this computational expediency com
 es at the high cost of distorting the spectrum and the symmetries of QCD. 
 We aim to use such fermions in anisotropic setups for hot and dense QCD\, 
 where isotropic staggered fermions are the well-established workhorse prov
 iding nonperturbative\, first-principles results widely used in heavy-ion 
 phenomenology. In general\, anisotropic lattices are a fairly well-establi
 shed part of the lattice QCD toolbox\, e.g. with undoubled Wilson fermions
  for vacuum or in-medium hadron spectroscopy. Yet anisotropic doubled latt
 ice fermions are still poorly understood.\nOn the one hand\, anisotropic g
 auge backgrounds permit access to finite-temperature QCD correlators with 
 high resolution in Euclidean time\, which are of central importance for ta
 ckling inverse problems such as spectral reconstruction. On the other hand
 \, minimally doubled fermions\, which are inherently anisotropic\, may pro
 ve valuable for studying dense QCD by avoiding problems related to rooting
  the complex light-quark determinant. Thus\, anisotropic lattice QCD with 
 doubled fermions may be a device for much-needed progress in multiple area
 s. I give an overview of the state of the art toward dynamical anisotropic
  lattice QCD with doubled fermions\, stressing both common aspects and dis
 tinctive features of minimally doubled and staggered fermions\, and close 
 with an outlook toward progress and applications in the near future.\n\nht
 tps://indico.global/event/18159/
LOCATION:U2-04 (Building U2 - Quantum)
URL:https://indico.global/event/18159/
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