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docs: docstring of Corr.Eigenvalue simplified.
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@ -314,23 +314,15 @@ class Corr:
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else:
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return reordered_vecs
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def Eigenvalue(self, t0, ts=None, state=0, sort=None):
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def Eigenvalue(self, t0, ts=None, state=0, sort="Eigenvalue"):
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"""Determines the eigenvalue of the GEVP by solving and projecting the correlator
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Parameters
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----------
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t0 : int
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The time t0 for G(t)v= lambda G(t_0)v
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ts : int
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fixed time G(t_s)v= lambda G(t_0)v if return_list=False
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If return_list=True and sorting=Eigenvector it gives a reference point for the sorting method.
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state : int
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The state one is interested in ordered by energy. The lowest state is zero.
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sort : string
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if this argument is set, a list of vectors (len=self.T) is returned. If it is left as None, only one vector is returned.
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"Eigenvalue" - The eigenvector is chosen according to which eigenvalue it belongs individually on every timeslice.
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"Eigenvector" - Use the method described in arXiv:2004.10472 [hep-lat] to find the set of v(t) belonging to the state.
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The reference state is identified by its eigenvalue at t=ts
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All other parameters are identical to the ones of Corr.GEVP.
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"""
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vec = self.GEVP(t0, ts=ts, sort=sort)[state]
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return self.projected(vec)
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