Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session B01: Active Matter
11:30 AM–2:18 PM,
Monday, March 6, 2023
Room: Room 124
Sponsoring
Unit:
GSNP
Chair: Daphne Klotsa, UNC Chapel Hill
Abstract: B01.00010 : Natural swarms in 3.99 dimensions*
1:42 PM–1:54 PM
Presenter:
Mattia Scandolo
(Univ of Rome La Sapienza)
Authors:
Mattia Scandolo
(Univ of Rome La Sapienza)
Andrea Cavagna
(CNR-ISC Inst for Complex Systems)
Luca Di Carlo
(Princeton university)
Irene Giardina
(Univ of Rome La Sapienza)
Tomas S. Grigera
(IFLySiB, CONICET, Universidad Nacional de La Plata)
Stefania Melillo
(CNR-ISC Inst for Complex Systems)
Leonardo Parisi
(CNR-ISC Inst for Complex Systems)
Giulia Pisegna
(Univ of Rome La Sapienza)
To account for the presence of inertial behavior, the velocity field is coupled to the generator of its rotations, namely the spin, through a mode-coupling interaction. Because of the rotational symmetry, the spin is assumed to be exactly conserved. However, this might not always be true in biological systems. Hence, we show also that in the presence of weak spin dissipation our predictions might still hold for finite-size systems such as swarms. This result gives additional evidence for the fact that inertial mode-coupling dynamics plays a crucial role, together with activity, in characterizing the collective behavior in biological systems.
*ERC Grant RG.BIO (785932) to Andrea Cavagna
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