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pro vyhledávání: '"Stauber, Valentin"'
Autor:
Hoelscher-Obermaier, Jason, Stevinson, Edward, Stauber, Valentin, Zhelev, Ivaylo, Botev, Victor, Wu, Ronin, Minton, Jeremy
The most interesting words in scientific texts will often be novel or rare. This presents a challenge for scientific word embedding models to determine quality embedding vectors for useful terms that are infrequent or newly emerging. We demonstrate h
Externí odkaz:
http://arxiv.org/abs/2210.15358
Autor:
Gongolidis, Mihalis, Minton, Jeremy, Wu, Ronin, Stauber, Valentin, Hoelscher-Obermaier, Jason, Botev, Viktor
Domain adaptation of embedding models, updating a generic embedding to the language of a specific domain, is a proven technique for domains that have insufficient data to train an effective model from scratch. Chemistry publications is one such domai
Externí odkaz:
http://arxiv.org/abs/2111.00677
Publikováno v:
Phys. Rev. Research 2, 033111 (2020)
Considering nonintegrable quantum Ising chains with exponentially decaying interactions, we present matrix product state results that establish a connection between low-energy quasiparticle excitations and the kind of nonanalyticities in the Loschmid
Externí odkaz:
http://arxiv.org/abs/1810.07187
Publikováno v:
Phys. Rev. E 96, 062118 (2017)
Using the framework of infinite Matrix Product States, the existence of an \textit{anomalous} dynamical phase for the transverse-field Ising chain with sufficiently long-range interactions was first reported in [J.~C.~Halimeh and V.~Zauner-Stauber, a
Externí odkaz:
http://arxiv.org/abs/1709.06050
Publikováno v:
Phys. Rev. B 96, 104436 (2017)
The existence or absence of non-analytic cusps in the Loschmidt-echo return rate is traditionally employed to distinguish between a regular dynamical phase (regular cusps) and a trivial phase (no cusps) in quantum spin chains after a global quench. H
Externí odkaz:
http://arxiv.org/abs/1703.09195
Publikováno v:
Phys. Rev. B 96, 134427 (2017)
Using an infinite Matrix Product State (iMPS) technique based on the time-dependent variational principle (TDVP), we study two major types of dynamical phase transitions (DPT) in the one-dimensional transverse-field Ising model (TFIM) with long-range
Externí odkaz:
http://arxiv.org/abs/1610.02019
Autor:
Halimeh, Jad C., Zauner-Stauber, Valentin, McCulloch, Ian P., de Vega, Inés, Schollwöck, Ulrich, Kastner, Michael
Publikováno v:
Phys. Rev. B 95, 024302 (2017)
We numerically study the dynamics after a parameter quench in the one-dimensional transverse-field Ising model with long-range interactions ($\propto 1/r^\alpha$ with distance $r$), for finite chains and also directly in the thermodynamic limit. In n
Externí odkaz:
http://arxiv.org/abs/1610.01468
Publikováno v:
New J. Phys. 18, 113033 (2016)
We demonstrate that the occurrence of symmetry breaking phase transitions together with the emergence of a local order parameter in classical statistical physics is a consequence of the geometrical structure of probability space. To this end we inves
Externí odkaz:
http://arxiv.org/abs/1607.03492
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