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7 papers · 2 filters
Entropic forces in a non-equilibrium system: Flocks of birds
Michele Castellana, William Bialek, Andrea Cavagna +1
When birds come together to form a flock, the distribution of their individual velocities narrows around the mean velocity of the flock. We argue that, in a broad class of models f…
Finite-size scaling as a way to probe near-criticality in natural swarms
A. Attanasi, A. Cavagna, L. Del Castello +8
Collective behaviour in biological systems is often accompanied by strong correlations. The question has therefore arisen of whether correlation is amplified by the vicinity to som…
Silent Flocks
Andrea Cavagna, Irene Giardina, Tomas S. Grigera +4
Experiments find coherent information transfer through biological groups on length and time scales distinctly below those on which asymptotically correct hydrodynamic theories appl…
Hyperuniformity of critical absorbing states
Daniel Hexner, Dov Levine
The properties of the absorbing states of non-equilibrium models belonging to the conserved directed percolation universality class are studied. We find that at the critical point…
Phenomenology of fully many-body-localized systems
David A. Huse, Rahul Nandkishore, Vadim Oganesyan
We consider fully many-body localized systems, i.e. isolated quantum systems where all the many-body eigenstates of the Hamiltonian are localized. We define a sense in which such s…
Many-body mobility edge in a mean-field quantum spin glass
C. R. Laumann, A. Pal, A. Scardicchio
The quantum random energy model provides a mean-field description of the equilibrium spin glass transition. We show that it further exhibits a many-body localization - delocalizati…