Diffraction of walking drops by a standing Faraday wave
Physical Review Research,
Journal Year:
2025,
Volume and Issue:
7(1)
Published: Feb. 28, 2025
The
Kapitza-Dirac
effect
is
the
diffraction
of
quantum
particles
by
a
standing
wave
light.
We
here
report
an
analogous
phenomenon
in
pilot-wave
hydrodynamics,
wherein
droplets
walking
across
surface
vibrating
liquid
bath
are
deflected
Faraday
wave.
show
that,
certain
parameter
regimes,
statistical
distribution
droplet
deflection
angles
reveals
pattern
reminiscent
that
observed
effect.
Through
experiments
and
simulations,
we
results
from
complex
interactions
with
Our
study
highlights
nonresonant
effects
associated
detuning
bouncing
vibration,
which
shown
to
lead
drop
speed
variations
sorting
according
droplet's
phase
impact.
discuss
similarities
differences
between
our
hydrodynamic
system
discrete
continuum
interpretations
effect,
introduce
notion
ponderomotive
hydrodynamics.
Published
American
Physical
Society
2025
Language: Английский
Perspectives on pilot-wave hydrodynamics
Applied Physics Letters,
Journal Year:
2024,
Volume and Issue:
125(3)
Published: July 15, 2024
We
present
a
number
of
fresh
perspectives
on
pilot-wave
hydrodynamics,
the
field
initiated
in
2005
by
Couder
and
Fort's
discovery
that
millimetric
droplets
self-propelling
along
surface
vibrating
bath
can
capture
certain
features
quantum
systems.
A
recurring
theme
will
be
hydrodynamics
furnishes
classical
framework
for
reproducing
many
phenomena
allows
one
to
rationalize
such
mechanistically,
from
local
realist
perspective,
obviating
need
appeal
nonlocality.
The
distinction
is
drawn
between
hydrodynamic
theory
its
counterparts,
Bohmian
mechanics,
Bohm–Vigier
stochastic
theory,
de
Broglie's
double-solution.
Each
these
predecessors
provide
valuable
touchstone
as
we
take
physical
picture
engendered
walking
extend
it
into
realm
via
theoretical
modeling.
Emphasis
given
recent
developments
field,
both
experimental
conceptual,
forecasting
potentially
fruitful
new
directions.
Language: Английский
Single-particle diffraction with a hydrodynamic pilot-wave model
Giuseppe Pucci,
No information about this author
Antoine Bellaigue,
No information about this author
Alessia Cirimele
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et al.
Physical review. E,
Journal Year:
2025,
Volume and Issue:
111(3)
Published: March 7, 2025
A
macroscopic
hydrodynamic
system
that
couples
a
particle
and
wave
has
recently
renewed
interest
in
the
question
as
to
what
extent
classical
may
reproduce
quantum
phenomena.
Here
we
investigate
single-particle
diffraction
with
pilot-wave
model
originally
developed
describe
system.
We
study
interactions
barrier
slits
of
increasing
width
by
focusing
on
near
field.
find
arising
wavelike
patterns
particles'
position
statistics,
which
compare
predictions
mechanics.
provide
mechanism
rationalizes
diffractive
behavior
our
Language: Английский
Synchronization and self-assembly of free capillary spinners
N. Sungar,
No information about this author
John P. Sharpe,
No information about this author
Loic Ijzerman
No information about this author
et al.
Physical review. E,
Journal Year:
2025,
Volume and Issue:
111(3)
Published: March 18, 2025
Chiral
active
particles
are
able
to
draw
energy
from
the
environment
self-propel
in
form
of
rotation.
We
describe
an
experimental
arrangement
wherein
chiral
objects,
spinners,
floating
on
surface
a
vibrated
fluid
rotate
due
emitted
capillary
waves.
observe
that
pairs
spinners
can
assemble
at
quantized
distances
via
mutually
generated
wavefield,
phase
synchronize
and,
some
circumstances,
globally
about
point
midway
between
them.
A
mathematical
model
based
wave-mediated
interactions
captures
salient
features
assembly
and
synchronization
while
qualitative
argument
is
rationalize
global
rotations
interference
radiation
stress
associated
with
wavefield.
Extensions
larger
collections
demonstrated,
highlighting
potential
for
this
tabletop
system
be
used
as
capable
synchronizing
swarming.
Language: Английский
The energetics of pilot-wave hydrodynamics
Journal of Fluid Mechanics,
Journal Year:
2025,
Volume and Issue:
1009
Published: April 11, 2025
A
millimetric
droplet
may
bounce
and
self-propel
across
the
surface
of
a
vertically
vibrating
liquid
bath,
guided
by
slope
its
accompanying
Faraday
wave
field.
The
‘walker’,
consisting
dressed
in
quasi-monochromatic
form,
is
spatially
extended
object
that
exhibits
many
phenomena
previously
thought
exclusive
to
quantum
realm.
While
walker
dynamics
can
be
remarkably
complex,
steady
periodic
states
arise
which
energy
added
bath
vibration
necessarily
balances
dissipated
viscous
effects.
system
energetics
then
characterised
terms
exchange
between
bouncing
guiding
or
‘pilot’
wave.
We
here
characterise
this
means
theoretical
investigation
into
pilot-wave
when
time-averaged
over
one
period.
Specifically,
we
derive
simple
formulae
characterising
dependence
droplet’s
gravitational
potential
on
speed.
Doing
so
makes
clear
partitioning
gravitational,
kinetic
energies
walking
droplets
number
steady,
statistically
dynamical
states.
demonstrate
depends
exclusively
ratio
speed
limit.
Language: Английский
Quantum Entanglement in Classical Systems: so what is the Subquantum Medium Made of?
International Journal of Theoretical Physics,
Journal Year:
2024,
Volume and Issue:
63(12)
Published: Dec. 11, 2024
As
astounding
as
it
may
still
seem
to
many,
Bell's
theorems
do
not
prove
nonlocality.
Non
separable
multipartite
objects
exist
classically,
meaning
with
local
physics,
the
statistical
state
measurement
of
which
violates
famous
inequalities.
Alleviating
almost
century
old
confusion,
correct
laws
statistics
and
logic
pinpoint
true
oddity
quantum
objects:
duality.
is
shown
in
first
part
this
short
essay,
duality
plus
conservation
allow
violation
inequalities
for
any
spatio-temporal
separation.
To
dig
deeper
into
particle
dualism,
second
part,
a
class
models
proposed
working
framework.
It
encompasses
some
chaotic
excitable
reaction-diffusion
systems,
whose
generalized
susceptibilities
make
them
compatible
quantized
fields
excitations,
desired
symmetry
group
including
renormalization
semigroup.
Particles
are
supposed
topological
nature.
Bohr-Sommerfeld
quantization
takes
place
thanks
invariants
stemming
from
densely
dispersed
defects
generated
by
multifractal
background.
Entanglement
phenomenology
arises
because
latent
variables
that
carried
away,
along
moving
particles
have
interacted,
correlations
preserved.
Conservation
assumed
be
born
phase,
just
momentum
instance.
In
other
words,
all
known
phenomena
physics
deterministic,
classical
real,
sense
information
does
propagate
locally
experiments
conducted
statistically
hide
variables.
Language: Английский