Holonomy-flux spinfoam amplitude

Holonomy-flux spinfoam amplitude
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Holonomy-flux 纺丝泡沫振幅

DOI:
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发表时间:
2012
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影响因子:
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通讯作者:
C. Perini
C. Perini
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作者:
C. Perini

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我们引入了任意2-复体上洛伦兹EPRL自旋泡沫的全纯表示。通过Ashtekar-Lewandowski-Marolf-Mourao-Thiemann热核相干态变换得到了该表示.新变量是哈密顿圈量子引力的经典完整通量相空间变量$(h,X)\simeq \mathcal T^*SU(2)$,它规定了Ashtekar联络$A=\Gamma + \gamma K$的完整性,以及它们的共轭引力通量。对于小的热核“时间”的spinfoam振幅达到峰值的经典时空几何形状,在至多可数许多曲率允许非零Barbero-Immirzi参数。我们简要地评论的可能性,使用替代翻转经典极限。
We introduce a holomorphic representation for the Lorentzian EPRL spinfoam on arbitrary 2-complexes. The representation is obtained via the Ashtekar-Lewandowski-Marolf-Mour\~ao-Thiemann heat kernel coherent state transform. The new variables are classical holonomy-flux phase space variables $(h,X)\simeq \mathcal T^*SU(2)$ of Hamiltonian loop quantum gravity prescribing the holonomies of the Ashtekar connection $A=\Gamma + \gamma K$, and their conjugate gravitational fluxes. For small heat kernel `time' the spinfoam amplitude is peaked on classical space-time geometries, where at most countably many curvatures are allowed for non-zero Barbero-Immirzi parameter. We briefly comment on the possibility to use the alternative flipped classical limit.
DOI: 10.1088/0264-9381/27/16/165009
发表时间: 2009-07
影响因子: 3.5
作者:
J. Barrett;R. J. Dowdall;W. Fairbairn;F. Hellmann;R. Pereira
通讯作者: J. Barrett;R. J. Dowdall;W. Fairbairn;F. Hellmann;R. Pereira