103 citations · 272 across the 13 of their papers we have counts for
15 papers
TheoPhysEval: Assessing AI agents at autonomous theoretical physics problem solving
A. Ramesh Chandra, Aaghaz Mahajan, Ainesh Sanyal +32
We present a suite of 50 unpublished research-level theoretical physics problems with verifiable answers. Without AI assistance, a typical problem in our collection could be solved…
Resource supply dynamics control stability and chaos in complex ecosystems
Jamila Rowland-Chandler, Akshit Goyal, Wenying Shou
Ecological interactions are often mediated by feedbacks between organisms and their resource environments. Yet, how resource supply dynamics dictate collective dynamical phases of…
Diverse communities promote the coexistence of closely-related strains through emergent equalization and stabilization
Naven Narayanan Venkatanarayanan, Akshit Goyal
Microbial communities harbor extensive fine-scale diversity: closely-related strains of the same species coexist alongside many distantly-related taxa. Yet strain coexistence remai…
Energy flow controls the stability of multitrophic ecosystems with stratified nonreciprocity
Rukmani Ramachandran, Akshit Goyal
Complex systems with nonreciprocal interactions are often stratified into layers. Ecosystems are a prime example, where species at one trophic level grow by consuming those at anot…
Emergent self-inhibition governs the landscape of stable states in complex ecosystems
Nitesh Kumar Patro, Washington Taylor, Akshit Goyal
Species-rich ecosystems often exhibit multiple stable states with distinct species compositions. Yet, the factors determining the likelihood of each state's occurrence remain poorl…
Ecosystems as adaptive living circuits
Ankit Dhanuka, Avi I. Flamholz, Arvind Murugan +1
Unlike many physical nonequilibrium systems, in biological systems, the coupling to external energy sources is not a fixed parameter but adaptively controlled by the system itself.…
Energy-ordered resource stratification as an agnostic signature of life
Akshit Goyal, Mikhail Tikhonov
The search for extraterrestrial life hinges on identifying biosignatures, often focusing on gaseous metabolic byproducts as indicators. However, most such biosignatures require ass…
A universal niche geometry governs the response of ecosystems to environmental perturbations
Akshit Goyal, Jason W. Rocks, Pankaj Mehta
How ecosystems respond to environmental perturbations is a fundamental question in ecology, made especially challenging due to the strong coupling between species and their environ…
Globally Solving a Class of Bilevel Programs with Spatial Price Equilibrium Constraints
Akshit Goyal, Jean-Philippe P. Richard
Bilevel programs with spatial price equilibrium constraints are strategic models that consider a price competition at the lower level. These models find application in facility loc…
An algorithm for bilevel optimization with traffic equilibrium constraints: convergence rate analysis
Akshit Goyal, Andrew Lamperski
Bilevel optimization with traffic equilibrium constraints plays an important role in transportation planning and management problems such as traffic control, transport network desi…
Closed ecosystems extract energy through self-organized nutrient cycles
Akshit Goyal, Avi I. Flamholz, Alexander P. Petroff +1
Our planet is roughly closed to matter, but open to energy input from the sun. However, to harness this energy, organisms must transform matter from one chemical (redox) state to a…
Decision Rule Approaches for Pessimistic Bilevel Linear Programs under Moment Ambiguity with Facility Location Applications
Akshit Goyal, Yiling Zhang, Chuan He
We study a pessimistic stochastic bilevel program in the context of sequential two-player games, where the leader makes a binary here-and-now decision, and the follower responds a…
Evidence for a multi-level trophic organization of the human gut microbiome
Tong Wang, Akshit Goyal, Veronika Dubinkina +1
The human gut microbiome is a complex ecosystem, in which hundreds of microbial species and metabolites coexist, in part due to an extensive network of cross-feeding interactions.…
Multiple stable states in microbial communities explained by the stable marriage problem
Akshit Goyal, Veronika Dubinkina, Sergei Maslov
Experimental studies of microbial communities routinely reveal that they have multiple stable states. While each of these states is generally resilient, certain perturbations such…
Diversity, stability, and reproducibility in stochastically assembled microbial ecosystems
Akshit Goyal, Sergei Maslov
Microbial ecosystems are remarkably diverse, stable, and often consist of a balanced mixture of core and peripheral species. Here we propose a conceptual model exhibiting all these…