Construction of supersymmetric field theories by Ichimatsu-patterned lattice and application to nonperturbative renormalization group
Construction of supersymmetric field theories by Ichimatsu-patterned lattice and application to nonperturbative renormalization group
批准号:
17540242
负责人:
SO Hiroto
金额:
$1.54万
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2005
资助国家:
日本
项目状态:
已结题
起止时间:
2005 至 2007
中文摘要
这个项目的目的是构建正则化场理论,以理解基本粒子物理的统一(超对称)模式,并获得在正则化场理论中实现的对称性的新概念。由于我们的基本粒子物理是由规范原理主导的,它的正则化版本也必须被规范。晶格规范理论是最合适的方法,但通常的立方晶格的对称性不如我们的世界。由于费米子的自由度,它是有特点的。我们已经清楚地表明,板松图案晶格上的费米场用SO(2D)而不是SO(D)来描述,其中D是时空维度。这一令人惊讶的事实使我们理解了单位晶格中费米子度是2^<;(2D)/2>;而不是2^<;D/2>;的倍增现象。超对称理论在玻色子和费米子自由度之间取得了平衡,而规范自由度的对应关系仍然是一个悬而未决的问题。为什么超对称的实现与规范对称不同?其中一个原因是费米场的路径积分度量。最简单的情况是0维的情况,我们研究了在Majorana费米子存在下的整体反常。其结果是,一致的理论强制我们在理论中偶数个Majorana费米子,如Witten反常。另一方面,我们如何在晶格上设置马约拉纳费米子?根据Luescher关于手征对称性的方法,我们尝试了Majorana条件。遗憾的是,手性汤川耦合的结果并不令人满意。因此,我们需要在正则化场理论中得到系统的对称性方法。量子主方程可以充分而必要地描述这种实现。这种方法可以应用于具有外部引力场的系统。
英文摘要
The purpose of this project is to construct regularized field theories in order to understand a unified (supersymmetric) mode of fundamental particle physics and to obtain a new idea on symmetry realized in regularized field theories.Since our fundamental particle physics is dominated by “gauge principle", its regularized version must be also gauged. The lattice gauge theory is a most suitable approach but the usual cubic lattice is less symmetry than our world.An Ichimatsu-patterned lattice has a substructure inside the normal cubic lattice. It is characteristic on account of fermionic degrees of freedom. We have made it clear that fermi fields on a Ichimatsu-patterned lattice are described by SO(2D) not SO(D) where D is space-time dimension. This surprising fact leads us to understand a doubling phenomena that fermionic degrees are 2^<(2D)/2> not 2^<D/2> in a unit lattice. Supersymmetric theories have a balance between bosonic and fermionic degree of freedom, and the counterpart for gauge freedom remains as an open problem.Why is the realization of supersymmetry difficult unlike gauge symmetry? One of reasons is the path integral measure of fermi fields. The simplest case is a 0-dimensional case and we have studied the global anomaly under the existence of Majorana fermions. The consequence is that the consistent theory enforces us even number of Majorana fermions in the theory such as Witten's anomaly. On the other hand, how can we set a Majorana fermion on lattice? According to an approach of Luescher for a chiral symmetry, we have tried a Majorana condition. To our regret, the result is not satisfied with chiral Yukawa couplings. Therefore, we need to get systematical approach of symmetry in regularized filed theories. The quantum master equation can describe the realization necessarily and sufficiently. This approach can apply to a system with external gravitational fields.
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Mass splitting of staggered fermion and SO (2D) Clifford algebra
交错费米子和 SO (2D) Clifford 代数的质量分裂
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
[T.Otobe, M.Yamagiwa, J, -I.Iwata, K.Yabana, T.Nakatsukasa, G.Bertsch, Morio Hatakeyama]
通讯作者:
Morio Hatakeyama
Overlap fermion in external gravity
外部重力下的重叠费米子
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
[寺澤敏夫, ほか, Hiroto So]
通讯作者:
Hiroto So
On Maiorana fermions on the lattice
论晶格上的 Maiorana 费米子
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
[T.Otobe, et. al., Jan M. Pawlowski]
通讯作者:
Jan M. Pawlowski
DOI:
--
发表时间:
2006
期刊:
Prog. Theor. Phys. 115
影响因子:
--
作者:
[H.So, H.Suzuki]
通讯作者:
H.Suzuki
格子超対称性の行列表示
晶格超对称性的矩阵表示
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
[加藤光裕, 坂本眞人, 宗博人]
通讯作者:
宗博人
共 12 条
Realization of lattice supersymmetry with over degree of freedom
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批准号:20540274
-
项目类别:Grant-in-Aid for Scientific Research (C)
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资助金额:$2.66万
-
财政年份:2008
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负责人:SO Hiroto
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依托单位:
Supersymmetry by lattice fermions near the continuum limit
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批准号:12640259
-
项目类别:Grant-in-Aid for Scientific Research (C)
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资助金额:$1.54万
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财政年份:2000
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负责人:SO Hiroto
-
依托单位:
海外基金