Physical Review Letters,
Journal Year:
2025,
Volume and Issue:
134(11)
Published: March 21, 2025
Systems
with
nonreciprocal
interactions
generically
display
time-dependent
states.
These
are
routinely
observed
in
finite
systems,
from
neuroscience
to
active
matter,
which
globally
ordered
oscillations
exist.
However,
the
stability
of
these
uniform
phases
noisy
spatially-extended
their
fate
thermodynamic
limit,
and
critical
behavior
corresponding
phase
transitions
not
fully
understood.
Here,
we
address
questions
by
introducing
a
generalization
Ising
model
study
its
means
numerical
analytical
approaches.
While
mean-field
equations
predict
three
stable
homogeneous
(disordered,
ordered,
swap
phase),
our
large
scale
simulations
reveal
more
complex
picture.
Static
order
is
destroyed
any
dimension
due
growth
rare
droplets
unless
symmetry
between
two
spin
types
broken,
triggering
stabilizing
droplet-capture
mechanism.
The
fluctuations
dimensions
through
proliferation
spiral
defects
but
stabilized
dimensions,
where
nonreciprocity
changes
exponents
XY,
thus
giving
rise
robust
spatially-distributed
clock.
Physical Review Letters,
Journal Year:
2022,
Volume and Issue:
129(7)
Published: Aug. 12, 2022
The
non-Hermitian
skin
effect
(NHSE),
the
accumulation
of
eigen
wavefunctions
at
boundaries
open
systems,
underlies
a
variety
exotic
properties
that
defy
conventional
wisdom.
While
NHSE
and
its
intriguing
impact
on
band
topology
dynamics
have
been
observed
in
classical
or
photonic
their
demonstration
quantum
many-body
setting
remains
elusive.
Here
we
report
experimental
realization
dissipative
Aharonov-Bohm
chain
--
topological
model
with
momentum
space
two-component
Bose-Einstein
condensate.
We
identify
unique
signatures
condensate
dynamics,
perform
Bragg
spectroscopy
to
resolve
edge
states
against
background
localized
bulk
states.
Our
work
sets
stage
for
further
investigation
interplay
statistics
interactions
NHSE,
is
significant
step
forward
control
simulation
physics.
Frontiers of Physics,
Journal Year:
2023,
Volume and Issue:
18(5)
Published: July 3, 2023
Abstract
This
article
reviews
recent
developments
in
the
non-Hermitian
skin
effect
(NHSE),
particularly
on
its
rich
interplay
with
topology.
The
review
starts
off
a
pedagogical
introduction
modified
bulk-boundary
correspondence,
synergy
and
hybridization
of
NHSE
band
topology
higher
dimensions,
as
well
as,
associated
complex
energy
plane
such
spectral
winding
graph
Following
which,
emerging
topics
are
introduced
criticality,
dynamical
phenomena,
manifestation
beyond
traditional
linear
non-interacting
crystal
lattices,
quantum
many-body
interactions.
Finally,
we
survey
demonstrations
experimental
proposals
NHSE.
Physical Review X,
Journal Year:
2022,
Volume and Issue:
12(1)
Published: Feb. 11, 2022
The
name
active
matter
refers
to
any
collection
of
entities
that
individually
use
free
energy
generate
their
own
motion
and
forces.
Through
interactions,
particles
spontaneously
organize
in
emergent
large-scale
structures
with
a
rich
range
materials
properties.
active-matter
paradigm
is
applied
living
nonliving
systems
over
vast
dynamic
range,
from
the
organization
subnuclear
cell
collective
at
human
scale.
diverse
phenomena
exhibited
by
these
all
stem
defining
property
as
an
assembly
components
dissipatively
break
time-reversal
symmetry.
This
article
outlines
selection
current
emerging
directions
research.
It
aims
providing
pedagogical
forward-looking
introduction
for
researchers
new
field
road
map
open
challenges
future
may
appeal
those
established
area.2
MoreReceived
30
June
2021DOI:https://doi.org/10.1103/PhysRevX.12.010501Published
American
Physical
Society
under
terms
Creative
Commons
Attribution
4.0
International
license.
Further
distribution
this
work
must
maintain
attribution
author(s)
published
article's
title,
journal
citation,
DOI.Published
SocietyPhysics
Subject
Headings
(PhySH)Physical
SystemsActive
matterCondensed
Matter,
Materials
&
Applied
Physics
Annual Review of Condensed Matter Physics,
Journal Year:
2023,
Volume and Issue:
14(1), P. 471 - 510
Published: March 10, 2023
Elasticity
typically
refers
to
a
material's
ability
store
energy,
while
viscosity
tendency
dissipate
it.
In
this
review,
we
discuss
fluids
and
solids
for
which
is
not
the
case.
These
materials
display
additional
linear
response
coefficients
known
as
odd
elasticity.
We
first
introduce
elasticity
from
continuum
perspective,
with
an
emphasis
on
their
rich
phenomenology,
including
transverse
responses,
modified
dislocation
dynamics,
topological
waves.
then
provide
overview
of
systems
that
range
quantum
fluids,
astrophysical
gasses,
active
driven
matter.
Finally,
comment
microscopic
mechanisms
by
arise.
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: March 23, 2023
Abstract
Higher-order
networks
have
emerged
as
a
powerful
framework
to
model
complex
systems
and
their
collective
behavior.
Going
beyond
pairwise
interactions,
they
encode
structured
relations
among
arbitrary
numbers
of
units
through
representations
such
simplicial
complexes
hypergraphs.
So
far,
the
choice
between
hypergraphs
has
often
been
motivated
by
technical
convenience.
Here,
using
synchronization
an
example,
we
demonstrate
that
effects
higher-order
interactions
are
highly
representation-dependent.
In
particular,
typically
enhance
in
but
opposite
effect
complexes.
We
provide
theoretical
insight
linking
synchronizability
different
hypergraph
structures
(generalized)
degree
heterogeneity
cross-order
correlation,
which
turn
influence
wide
range
dynamical
processes
from
contagion
diffusion.
Our
findings
reveal
hidden
impact
on
dynamics,
highlighting
importance
choosing
appropriate
when
studying
with
nonpairwise
interactions.
Non-Hermitian
quantum
many-body
systems
are
attracting
widespread
interest
for
their
exotic
properties,
including
unconventional
criticality
and
topology.
Here,
we
study
how
information
correlations
spread
under
a
quench
generated
by
prototypical
non-Hermitian
spin
chain.
Using
the
mapping
to
fermions,
solve
exactly
problem
compute
entanglement
entropy
correlation
dynamics
in
thermodynamic
limit.
Depending
on
parameters,
identify
two
dynamical
phases.
One
is
characterized
rapidly
saturating
correlations.
The
other
presents
logarithmic
growth
time
spreading
faster
than
associated
unitary
system,
with
collapses
revivals
giving
rise
modulated
light-cone
structure.
long-time
limit,
analytically
that
follows
law,
an
effective
central
charge
obtain
closed
form.
Our
results
provide
example
of
solvable
shows
rich
physics,
spectral
transitions.
