Zobrazeno 1 - 10
of 1 160
pro vyhledávání: '"BHATTACHARYA, KAUSHIK"'
We propose a method to accurately and efficiently identify the constitutive behavior of complex materials through full-field observations. We formulate the problem of inferring constitutive relations from experiments as an indirect inverse problem th
Externí odkaz:
http://arxiv.org/abs/2412.02864
We investigate the systematic design of compliant morphing structures composed of materials reacting to an external stimulus. We add a perimeter penalty term to ensure existence of solutions. We propose a phase-field approximation of this sharp inter
Externí odkaz:
http://arxiv.org/abs/2411.06289
In this article, we propose a new way to handle interactions between two scalar fields in the cosmological backdrop where one scalar field oscillates rapidly in the cosmological time scale while the other does not show any periodic behavior in the sa
Externí odkaz:
http://arxiv.org/abs/2410.20736
Photomechanically active materials undergo reversible deformation on illumination, making them ideal for remote, tether-free actuation. Much of the work on these materials has focused on one-dimensional structures, such as strips. In this paper, we e
Externí odkaz:
http://arxiv.org/abs/2410.19645
We explore the possibilities of modeling a spherically symmetric static spacetime that can emerge as the end state of gravitational collapse, by considering it to be seeded by a composite fluid made of matter and a scalar field. In this scenario, the
Externí odkaz:
http://arxiv.org/abs/2409.01110
We constrain the parameters of the $k$-essence scalar field model with inverse square and exponential potentials using data sets including Pantheon+SHOES and the Dark Energy Survey (DES) of Type Ia supernovae, Baryon Acoustic Oscillation (BAO) data f
Externí odkaz:
http://arxiv.org/abs/2406.07179
Publikováno v:
Phys. Rev. D 110 (2024) 063536
Departing from standard slow-roll conditions is one way of putting the inflationary paradigm to test, and constraining the dynamics of the inflaton field with a constant-rate of roll of the inflaton field, a.k.a. the constant-roll scenario, is one wa
Externí odkaz:
http://arxiv.org/abs/2406.00340
Liquid crystal elastomers are cross-linked elastomer networks with liquid crystal mesogens incorporated into the main or side chain. Polydomain liquid crystalline (nematic) elastomers exhibit unusual mechanical properties like soft elasticity, where
Externí odkaz:
http://arxiv.org/abs/2405.11116
In this article we address the puzzle related to the existence of a proper cosmological solution, where the number of equations exceeds the number of unknown functions. Although only two of the various dynamical equations are independent, the solutio
Externí odkaz:
http://arxiv.org/abs/2404.13332
Autor:
Zhang, Yupeng, Bhattacharya, Kaushik
Neural network based models have emerged as a powerful tool in multiscale modeling of materials. One promising approach is to use a neural network based model, trained using data generated from repeated solution of an expensive small scale model, as
Externí odkaz:
http://arxiv.org/abs/2402.12674