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SUMMARY:CECAM workshop:" Out-of-equilibrium phenomena in the presence of c
 urvature and non-reciprocal interactions"
DTSTART;VALUE=DATE:20240702
DTSTAMP:20260501T165518Z
UID:2e44f9134c7465e7b36b87128cfe14a9234a83f9dbc468de43cb16eb
CATEGORIES:Conferences - Seminars
DESCRIPTION:You can apply to participate and find all the relevant informa
 tion (speakers\, abstracts\, program\,...) on the event website: https://
 www.cecam.org/workshop-details/out-of-equilibrium-phenomena-in-the-presenc
 e-of-curvature-and-non-reciprocal-interactions-1284\n\n*** REGISTRATION D
 EADLINE *** : 3rd June 2024\n\nDescription\nActive matter is a fundament
 ally new state of matter characterized by being kept far from thermodynami
 c equilibrium by the ability of its constitutive elements – often refer
 red to as agents – to convert stored or ambient free energy into direct
 ed movement. Examples of active matter can be found in both biological an
 d artificial systems\, with active agents varying widely in size from the 
 nano-scale to meters. Active matter is especially prevalent in living sys
 tems with many subcellular\, cellular\, and tissue-scale processes being 
 active. Therefore\, theoretical and computational frameworks developed to
  model active matter have emerged as powerful tools for understanding the
  physics underlying the living world.\nCurvature and topology play a vital
  role in living systems. They help shape and guide the growth and functio
 nality of cells\, tissues\, and whole organs. A great example of how curv
 ature impacts biological processes is the development of an embryo\, where
  collectives of cells differentiate and rearrange themselves into complex
  three-dimensional functional structures. This complex process is guided b
 y a network of chemical and mechanical signals. Morphogenic processes ar
 e inherently active and involve careful coordination of cell division\, m
 igration\, and removal. In recent years\, it has been observed that topol
 ogical defects\, or local discontinuities in the ordered structure of the 
 material\, play an important role in these shaping processes [1–3]. Top
 ological defects can act like organizing centres for stress within the ma
 terial\, and are known to interact with both curvature and topology [4\, 5
 ]. Despite its importance\, understanding how curvature operates in and a
 ffects active systems is in its infancy with many experimental and theore
 tical challenges.\nEqually important are the effects of non-reciprocal int
 eractions\, i.e.\, effective interactions between agents that violate New
 ton’s third law. Such interactions are typically observed in cells or mi
 croorganisms [6]\, animal groups and social agents [7–9]\, and play pivo
 tal roles in phenomena such as predator-prey dynamics\, velocity alignmen
 t\, or opinion spreading [10–13]. Despite such omnipresence\, a general 
 framework for describing effects of non-reciprocal interactions is still l
 acking\, thus hampering the ability to control and exploit them. Particl
 e and spin models\, as well as effective continuum descriptions\, have be
 en investigated\, showing that non-reciprocal systems generically give ris
 e to spontaneous currents and non-equilibrium patterns typically not seen
  when such interactions are not present [2\,6\, 14–19].\nThis workshop w
 ill bring together scientists specializing in the fields of curvature\, to
 pology\, and non-reciprocal interactions\, especially as they apply to so
 ft matter and active-matter model systems. The aim is to encourage dialog
 ue\, idea exchange\, and solution-oriented discussions that will propel t
 he community towards overcoming the inherent challenges in these fields. T
 o do so\, the workshop will foster a collaborative environment for sharin
 g new ideas\, techniques\, and data. In addition\, the collective experti
 se of the attendees will not only push the limits of current understanding
  of the effect of curvature and non-reciprocity on active matter\, but a
 lso create a road map for tackling future challenges.\n\nReference\n[1] T.
  Vicsek\, A. Czirók\, E. Ben-Jacob\, I. Cohen\, O. Shochet\, Phys. Rev. L
 ett.\, 75\, 1226-1229 (1995)\n[2] S. Loos\, S. Klapp\, T. Martynec\, Phys
 . Rev. Lett.\, 130\, 198301 (2023)\n[3] S. Osat\, R. Golestanian\, Nat. N
 anotechnol.\, 18\, 79-85 (2022)\n[4] A. Poncet\, D. Bartolo\, Phys. Rev. 
 Lett.\, 128\, 048002 (2022)\n[5] M. Fruchart\, R. Hanai\, P. Littlewood\,
  V. Vitelli\, Nature\, 592\, 363-369 (2021)\n[6] Z. You\, A. Baskaran\, M
 . Marchetti\, Proc. Natl. Acad. Sci. U.S.A.\, 117\, 19767-19772 (2020)\n[
 7] A. Ivlev\, J. Bartnick\, M. Heinen\, C. Du\, V. Nosenko\, H. Löwen\, P
 hys. Rev. X\, 5\, 011035 (2015)\n[8] D. Levis\, A. Diaz-Guilera\, I. Pago
 nabarraga\, M. Starnini\, Phys. Rev. Research\, 2\, 032056 (2020)\n[9] I.
  Couzin\, J. Krause\, N. Franks\, S. Levin\, Nature\, 433\, 513-516 (2005
 )\n[10] P. Abrams\, Annu. Rev. Ecol. Syst.\, 31\, 79-105 (2000)\n[11] Y. 
 Maroudas-Sacks\, L. Garion\, L. Shani-Zerbib\, A. Livshits\, E. Braun\, K.
  Keren\, Nat. Phys.\, 17\, 251-259 (2020)\n[12] J. Múgica\, J. Torrents\
 , J. Cristín\, A. Puy\, M. Miguel\, R. Pastor-Satorras\, Sci. Rep.\, 12\
 , 10783 (2022)\n[13] L. Gómez-Nava\, R. Bon\, F. Peruani\, Nat. Phys.\, 
 18\, 1494-1501 (2022)\n[14] D. Sumpter\, Phil. Trans. R. Soc. B\, 361\, 5
 -22 (2005)\n[15] J. Agudo-Canalejo\, R. Golestanian\, Phys. Rev. Lett.\, 
 123\, 018101 (2019)\n[16] L. Hoffmann\, L. Carenza\, J. Eckert\, L. Giomi\
 , Sci. Adv.\, 8\, (2022)\n[17] P. Ellis\, D. Pearce\, Y. Chang\, G. Golds
 ztein\, L. Giomi\, A. Fernandez-Nieves\, Nature. Phys.\, 14\, 85-90 (2017
 )\n[18] P. Guillamat\, C. Blanch-Mercader\, G. Pernollet\, K. Kruse\, A. R
 oux\, Nat. Mater.\, 21\, 588-597 (2022)\n[19] T. Saw\, A. Doostmohammadi\
 , V. Nier\, L. Kocgozlu\, S. Thampi\, Y. Toyama\, P. Marcq\, C. Lim\, J. Y
 eomans\, B. Ladoux\, Nature\, 544\, 212-216 (2017)
LOCATION:BCH 2103 https://plan.epfl.ch/?room==BCH%202103
STATUS:CONFIRMED
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