@article{ISI:000288326700012,
 abstract = {A geometrically polar granular rod confined in 2D geometry, subjected to
a sinusoidal vertical oscillation, undergoes noisy self-propulsion in a
direction determined by its polarity. When surrounded by a medium of
crystalline spherical beads, it displays substantial negative
fluctuations in its velocity. We find that the large-deviation function
(LDF) for the normalized velocity is strongly non-Gaussian with a kink
at zero velocity, and that the antisymmetric part of the LDF is linear,
resembling the fluctuation relation known for entropy production, even
when the velocity distribution is clearly non-Gaussian. We extract an
analogue of the phase-space contraction rate and find that it compares
well with an independent estimate based on the persistence of forward
and reverse velocities.},
 article-number = {118001},
 author = {Kumar, Nitin and Ramaswamy, Sriram and Sood, A. K.},
 doi = {10.1103/PhysRevLett.106.118001},
 issn = {0031-9007},
 journal = {PHYSICAL REVIEW LETTERS},
 month = {MAR 14},
 number = {11},
 orcid-numbers = {Kumar, Nitin/0000-0003-2697-4842},
 researcherid-numbers = {Kumar, Nitin/AAS-3576-2020},
 times-cited = {45},
 title = {Symmetry Properties of the Large-Deviation Function of the Velocity of a
Self-Propelled Polar Particle},
 unique-id = {ISI:000288326700012},
 volume = {106},
 year = {2011}
}