Tootfinder

The PRODSAT phase of random quantum satisfiability
Joon Lee, Nicolas Macris, Jean Bernoulli Ravelomanana, Perrine Vantalon
https://arxiv.org/abs/2404.18447

The PRODSAT phase of random quantum satisfiability
The $k$-QSAT problem is a quantum analog of the famous $k$-SAT constraint satisfaction problem. We must determine the zero energy ground states of a Hamiltonian of $N$ qubits consisting of a sum of $M$ random $k$-local rank-one projectors. It is known that product states of zero energy exist with high probability if and only if the underlying factor graph has a clause-covering dimer configuration. This means that the threshold of the PRODSAT phase is a purely geometric quantity equal to the dim…

Zero-shot cross-lingual transfer in instruction tuning of large language model
Nadezhda Chirkova, Vassilina Nikoulina
https://arxiv.org/abs/2402.14778 http…

Zero-shot cross-lingual transfer in instruction tuning of large language model
Instruction tuning (IT) is widely used to teach pretrained large language models (LLMs) to follow arbitrary instructions, but is under-studied in multilingual settings. In this work, we conduct a systematic study of zero-shot cross-lingual transfer in IT, when an LLM is instruction-tuned on English-only data and then tested on user prompts in other languages. We investigate the influence of model configuration choices and devise a multi-facet evaluation strategy for multilingual instruction fol…

This https://arxiv.org/abs/2309.08770 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csRO_…

Constrained Bimanual Planning with Analytic Inverse Kinematics
In order for a bimanual robot to manipulate an object that is held by both hands, it must construct motion plans such that the transformation between its end effectors remains fixed. This amounts to complicated nonlinear equality constraints in the configuration space, which are difficult for trajectory optimizers. In addition, the set of feasible configurations becomes a measure zero set, which presents a challenge to sampling-based motion planners. We leverage an analytic solution to the inve…

Considerations on the relaxation time in shear-driven jamming
Lucas Hedstr\"om, Peter Olsson
https://arxiv.org/abs/2402.10682 https://

Considerations on the relaxation time in shear-driven jamming
We study the jamming transition in a model of elastic particles under shear at zero temperature, with a focus on the relaxation time $τ_1$. This relaxation time is from two-step simulations where the first step is the ordinary shearing simulation and the second step is the relaxation of the energy after stopping the shearing. $τ_1$ is determined from the final exponential decay of the energy. Such relaxations are done with many different starting configuration generated by a long shearing sim…

This https://arxiv.org/abs/2404.01027 has been replaced.
link: https://scholar.google.com/scholar?q=a

Easy-to-configure zero-dimensional valley-chiral modes in a graphene point junction
The valley degree of freedom in 2D materials can be manipulated for low-dissipation quantum electronics called valleytronics. At the boundary between two regions of bilayer graphene with different atomic or electrostatic configuration, valley-polarized current has been realized. However, the demanding fabrication and operation requirements limit device reproducibility and scalability toward more advanced valleytronics circuits. We demonstrate a new device architecture of a point junction where …