Canonical tensor models with local time
Canonical tensor models with local time
复制标题
具有当地时间的规范张量模型
DOI:
10.1142/s0217751x12500200
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发表时间:
2011
期刊:
影响因子:
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通讯作者:
N. Sasakura
中科院分区:
文献类型:
--
作者:
N. Sasakura
It is an intriguing question how local time can be introduced in the emergent picture of spacetime. In this paper, this problem is discussed in the context of tensor models. To consistently incorporate local time into tensor models, a rank- three tensor model with first class constraints in Hamilton formalism is presented. In the limit of usual continuous spaces, the algebra of constraints reproduces that of general relativity in Hamilton formalism. While the momentum constraints can be realized rather easily by the symmetry of the tensor models, the form of the Hamiltonian constraints is strongly limited by the condition of the closure of the whole constraint algebra. Thus the Hamiltonian constraints have been determined on the assumption that they are local and at most cubic in canonical variables. The form of the Hamiltonian constraints has similarity with the Hamiltonian in the c < 1 string field theory, but it seems impossible to realize such a constraint algebras in the framework of vector or matrix models. Instead these models are rather useful as matter theories coupled with the tensor model. In this sense, a three-index tensor is the minimum-rank dynamical variable necessary to describe gravity in terms of tensor models.
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DOI:
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发表时间:
2008
期刊:
International Journal of Modern Physics A 23
影响因子:
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作者:
Kaori;Kaki;Masayasu Harada;Masayasu Harada;Masayasu Harada;Deirdre Black;Masayasu Harada;Masayasu Harada;Masayasu Harada;Masayasu Harada;Masayasu Harada;Deirdre Black;Masayasu Harada;Masayasu Harada;Masayasu Harada;Masayasu Harada;Deirdre Black;Masayasu Harada;Masayasu Harada;Masayasu Harada;Masayasu Harada;Masayasu Harada;Masayasu Harada;Naoki Sasakura
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Naoki Sasakura
DOI:
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发表时间:
2006
期刊:
Classical and Quantum Gravity 23
影响因子:
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Yuya Sasai;Naoki Sasakura;Naoki Sasakura
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DOI:
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发表时间:
2006
期刊:
Modern Physics Letters A 21
影响因子:
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作者:
Yuya;Sasai;Naoki;Sasakura;Naoki Sasakura
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DOI:
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发表时间:
2008
期刊:
Prog. Theor. Phys. 119
影响因子:
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作者:
A.G.Akeroyd;Mayumi Aoki;Yasuhiro Okada;杉本茂樹;I. Ogawa;Naoki Sasakura
通讯作者:
Naoki Sasakura
DOI:
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