A deformation formula for the heat kernel [PDF]
Thierry HargeLet us consider a time-dependent differential operator quadratic with respect to the phase variables. Let us consider a multiplication operator defined with the help of a "small" matrix-valued function. Under suitable conditions, we give an "explicit" expression of "the" heat kernel associated to the sum of the two previous operators for small time.View original: http://arxiv.org/abs/1302.1810
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