Exact NMR simulation of protein-size spin systems using tensor train formalism
Exact NMR simulation of protein-size spin systems using tensor train formalism
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使用张量序列形式对蛋白质大小的自旋系统进行精确 NMR 模拟
DOI:
10.1103/physrevb.90.085139
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发表时间:
2014
影响因子:
3.7
通讯作者:
Savostyanov D
中科院分区:
文献类型:
--
作者:
Savostyanov D
We introduce a new method, based on alternating optimization, for compact representation of spin Hamiltonians and solution of linear systems of algebraic equations in the tensor train format. We demonstrate the method's utility by simulating, without approximations, aNMR spectrum of ubiquitin—a protein containing several hundred interacting nuclear spins. Existing simulation algorithms for the spin system and the NMR experiment in question either require significant approximations or scale exponentially with the spin system size. We compare the proposed method to theSpinachpackage that uses heuristic restricted state space techniques to achieve polynomial complexity scaling. When the spin system topology is close to a linear chain (e.g., for the backbone of a protein), the tensor train representation is more compact and can be computed faster than the sparse representation using restricted state spaces.
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DOI:
10.1016/j.cpc.2013.12.017
发表时间:
2013-06
期刊:
Comput. Phys. Commun.
影响因子:
--
作者:
S. Dolgov;B. Khoromskij;I. Oseledets;D. Savostyanov
通讯作者:
S. Dolgov;B. Khoromskij;I. Oseledets;D. Savostyanov
影响因子:
2.7
作者:
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通讯作者:
IKURA M
DOI:
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发表时间:
2001
期刊:
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--
作者:
Ian P. McCulloch;A. R. Bishop;M. Gulácsi
通讯作者:
M. Gulácsi
DOI:
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发表时间:
2013
期刊:
影响因子:
--
作者:
T. Huckle;K. Waldherr;T. Schulte
通讯作者:
T. Schulte
DOI:
--
发表时间:
1976
期刊:
影响因子:
--
作者:
M. Barfield;R. Spear;S. Sternhell
通讯作者:
S. Sternhell