* Interface to GiNaC's clifford algebra (Dirac gamma) objects. */
/*
- * GiNaC Copyright (C) 1999-2006 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2008 Johannes Gutenberg University Mainz, Germany
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
// other constructors
public:
- clifford(const ex & b, unsigned char rl = 0, bool anticommut = false);
- clifford(const ex & b, const ex & mu, const ex & metr, unsigned char rl = 0, bool anticommut = false, int comm_sign = -1);
+ clifford(const ex & b, unsigned char rl = 0);
+ clifford(const ex & b, const ex & mu, const ex & metr, unsigned char rl = 0, int comm_sign = -1);
// internal constructors
- clifford(unsigned char rl, const ex & metr, bool anticommut, int comm_sign, const exvector & v, bool discardable = false);
- clifford(unsigned char rl, const ex & metr, bool anticommut, int comm_sign, std::auto_ptr<exvector> vp);
+ clifford(unsigned char rl, const ex & metr, int comm_sign, const exvector & v, bool discardable = false);
+ clifford(unsigned char rl, const ex & metr, int comm_sign, std::auto_ptr<exvector> vp);
// functions overriding virtual functions from base classes
public:
ex get_metric() const { return metric; }
virtual ex get_metric(const ex & i, const ex & j, bool symmetrised = false) const;
bool same_metric(const ex & other) const;
- bool is_anticommuting() const { return anticommuting; } //**< See the member variable anticommuting */
int get_commutator_sign() const { return commutator_sign; } //**< See the member variable commutator_sign */
inline size_t nops() const {return inherited::nops() + 1; }
protected:
unsigned char representation_label; /**< Representation label to distinguish independent spin lines */
ex metric; /**< Metric of the space, all constructors make it an indexed object */
- bool anticommuting; /**< Simplifications for anticommuting units is much simpler and we need this info readily available */
int commutator_sign; /**< It is the sign in the definition e~i e~j +/- e~j e~i = B(i, j) + B(j, i)*/
};
* @param metr Metric (should be indexed, tensmetric or a derived class, or a matrix)
* @param rl Representation label
* @return newly constructed Clifford unit object */
-ex clifford_unit(const ex & mu, const ex & metr, unsigned char rl = 0, bool anticommuting = false);
+ex clifford_unit(const ex & mu, const ex & metr, unsigned char rl = 0);
/** Create a Dirac gamma object.
*
* @param rl Representation label
* @param e Clifford unit object
* @return Clifford vector with given components */
-ex lst_to_clifford(const ex & v, const ex & mu, const ex & metr, unsigned char rl = 0, bool anticommuting = false);
+ex lst_to_clifford(const ex & v, const ex & mu, const ex & metr, unsigned char rl = 0);
ex lst_to_clifford(const ex & v, const ex & e);
/** An inverse function to lst_to_clifford(). For given Clifford vector extracts
* @param v Vector to be transformed
* @param G Metric of the surrounding space, may be a Clifford unit then the next parameter is ignored
* @param rl Representation label
- * @param anticommuting indicates if Clifford units anticommutes
* @return List of components of the transformed vector*/
-ex clifford_moebius_map(const ex & a, const ex & b, const ex & c, const ex & d, const ex & v, const ex & G, unsigned char rl = 0, bool anticommuting = false);
+ex clifford_moebius_map(const ex & a, const ex & b, const ex & c, const ex & d, const ex & v, const ex & G, unsigned char rl = 0);
/** The second form of Moebius transformations defined by a 2x2 Clifford matrix M
* This function takes the transformation matrix M as a single entity.
* @param v Vector to be transformed
* @param G Metric of the surrounding space, may be a Clifford unit then the next parameter is ignored
* @param rl Representation label
- * @param anticommuting indicates if Clifford units anticommutes
* @return List of components of the transformed vector*/
-ex clifford_moebius_map(const ex & M, const ex & v, const ex & G, unsigned char rl = 0, bool anticommuting = false);
+ex clifford_moebius_map(const ex & M, const ex & v, const ex & G, unsigned char rl = 0);
} // namespace GiNaC