134 citations · 453 across the 14 of their papers we have counts for
15 papers
How Smart Should a Forager Be?
U. Bhat, S. Redner
We introduce an idealized model of an intelligent forager in which higher intelligence corresponds to a larger spatial range over which the forager can detect food. Such a forager…
Caching in or falling back at the Sevilleta
Justin D. Yeakel, Uttam Bhat, Seth D. Newsome
Foraging in uncertain environments requires balancing the risks associated with finding alternative resources against potential gains. In aridland environments characterized by ext…
Scaling of the risk landscape drives optimal life history strategies and the evolution of grazing
Uttam Bhat, Christopher P. Kempes, Justin D. Yeakel
Consumers face numerous risks that can be minimized by incorporating different life-history strategies. How much and when a consumer adds to its energetic reserves or invests in re…
The Advantage of Foraging Myopically
C. L. Rager, U. Bhat, O. Bénichou +1
We study the dynamics of a \emph{myopic} forager that randomly wanders on a lattice in which each site contains one unit of food. Upon encountering a food-containing site, the fora…
Edge fires drive the shape and stability of tropical forests
Laurent Hébert-Dufresne, Adam F. A. Pellegrini, Uttam Bhat +3
In tropical regions, fires propagate readily in grasslands but typically consume only edges of forest patches. Thus forest patches grow due to tree propagation and shrink by fires…
Optimally Frugal Foraging
O. Benichou, U. Bhat, P. L. Krapivsky +1
We introduce the \emph{frugal foraging} model in which a forager performs a discrete-time random walk on a lattice, where each site initially contains food units. The…
Starvation Dynamics of a Greedy Forager
U. Bhat, S. Redner, O. Benichou
We investigate the dynamics of a greedy forager that moves by random walking in an environment where each site initially contains one unit of food. Upon encountering a food-contain…
Does Greed Help a Forager Survive?
U. Bhat, S. Redner, O. Benichou
We investigate the role of greed on the lifetime of a random-walking forager on an initially resource-rich lattice. Whenever the forager lands on a food-containing site, all the fo…
Densification and Structural Transitions in Networks that Grow by Node Copying
U. Bhat, P. L. Krapivsky, R. Lambiotte +1
We introduce a growing network model---the copying model---in which a new node attaches to a randomly selected target node and, in addition, independently to each of the neighbors…
Structural Transitions in Dense Networks
R. Lambiotte, P. L. Krapivsky, U. Bhat +1
We introduce an evolving network model in which a new node attaches to a randomly selected target node and also to each of its neighbors with probability . The resulting network…
Exotic phase transitions of k-cores in clustered networks
Uttam Bhat, Munik Shrestha, Laurent Hébert-Dufresne
The giant -core --- maximal connected subgraph of a network where each node has at least neighbors --- is important in the study of phase transitions and in applications of…
Stochastic Search with Poisson and Deterministic Resetting
Uttam Bhat, Caterina De Bacco, S. Redner
We investigate a stochastic search process in one, two, and three dimensions in which diffusing searchers that all start at seek a target at the origin. Each of the searc…
Exploring the isotopic niche: isotopic variance, physiological incorporation, and the temporal dynamics of foraging
Justin D. Yeakel, Uttam Bhat, Emma A. Elliott Smith +1
Consumer foraging behaviors are dynamic, changing in response to prey availability, seasonality, competition, and even the consumer's physiological state. The isotopic composition…
Emergence of Clustering in an Acquaintance Model without Homophily
Uttam Bhat, P. L. Krapivsky, S. Redner
We introduce an agent-based acquaintance model in which social links are created by processes in which there is no explicit homophily. In spite of the homogeneous nature of the soc…
Exclusion Processes with Avalanches
Uttam Bhat, P. L. Krapivsky
In an exclusion process with avalanches, when a particle hops to a neighboring empty site which is adjacent to an island the particle on the other end of the island immediately hop…