tdiractodr.h

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// -*- C++ -*-
/*! \file
 *  \brief Basis rotation matrix from Dirac to Degrand-Rossi (and reverse)
 */
 
#ifndef __tdiractodr_h__
#define __tdiractodr_h__
 
#include "chromabase.h"
 
namespace Chroma 
{
 
  //! The Dirac to Degrand-Rossi spin transformation matrix
  /*!
   * \ingroup ferm
   *
   * Return the similarity transformation matrix from 
   * Euclidean Dirac to Euclidean Degrand-Rossi basis
   *
   * \returns The U in   Gamma_{Degrand-Rossi} = U Gamma_Dirac U^dag
   */
 
  SpinMatrixD TDiracToDRMat();
 
}  // end namespace Chroma
 
#endif