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pro vyhledávání: '"Vijigiri, Vikas"'
Berry phase interference arguments that underlie the theory of deconfined quantum criticality (DQC) for spin-$\frac{1}{2}$ antiferromagnets have also been invoked to allow for continuous transitions in spin-1 magnets including a N\'eel to (columnar)
Externí odkaz:
http://arxiv.org/abs/2307.14254
We study the ground state (GS) many-body quantum entanglement of two different transverse field models on a quasi-2D square lattice relevant to a Hydrogen-bonded crystal, i.e, squaric acid. We measure the genuine multipartite qubit-entanglement ($C_{
Externí odkaz:
http://arxiv.org/abs/2101.12443
Autor:
Vijigiri, Vikas, Mandal, Saptarshi
We study analytically the finite-temperature phase diagram of proton ordering of a quasi-two dimensional hydrogen-bonded system, namely the squaric acid crystal($\text{H}_2\text{C}_4\text{O}_4$). We take into account the four-spin interaction model a
Externí odkaz:
http://arxiv.org/abs/1909.12693
Autor:
Vijigiri, Vikas, Mandal, Saptarshi
Publikováno v:
Phys. Rev. B 98, 224425 (2018)
We study an organic Hydrogen bonded material $\rm{H_2SQ}$ analytically and map out the phase diagram as well as low energy excitations in the relevant parameter space. At zeroth order the dynamics is governed by plaquette interaction (product of $\si
Externí odkaz:
http://arxiv.org/abs/1803.03989
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