X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=check%2Fexam_clifford.cpp;h=71f49dba88f9526cd360c377a5609ee437086e8a;hp=287a600d10882700ac53a1e28098811f45327082;hb=729d30ae80fa9fdcdbafd7a29e8671083130f69c;hpb=504b90fcaeafe013a6f1b32edcc0d6a51561fc35

diff --git a/check/exam_clifford.cpp b/check/exam_clifford.cpp
index 287a600d..71f49dba 100644
--- a/check/exam_clifford.cpp
+++ b/check/exam_clifford.cpp
@@ -3,7 +3,7 @@
  *  Here we test GiNaC's Clifford algebra objects. */
 
 /*
- *  GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2002 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
@@ -156,23 +156,34 @@ static unsigned clifford_check3(void)
 	  + dim * dirac_gamma5() * dirac_gamma(nu) * dirac_gamma(rho) * dirac_gamma(sig) * dirac_gamma(kap);
 	e = dirac_trace(e).simplify_indexed();
 	e = (e / (dim - 4)).normal();
-	result += check_equal(e, 8 * I * eps0123(nu, rho, sig, kap));
+	result += check_equal(e, 8 * I * lorentz_eps(nu.replace_dim(4), rho.replace_dim(4), sig.replace_dim(4), kap.replace_dim(4)));
 
 	// one-loop vacuum polarization in QED
 	e = dirac_gamma(mu) *
-	    (dirac_slash(l, dim) + dirac_slash(q, dim) + m * dirac_ONE()) *
+	    (dirac_slash(l, dim) + dirac_slash(q, 4) + m * dirac_ONE()) *
 	    dirac_gamma(mu.toggle_variance()) *
 	    (dirac_slash(l, dim) + m * dirac_ONE());
 	e = dirac_trace(e).simplify_indexed(sp);
 	result += check_equal(e, 4*((2-dim)*l*l + (2-dim)*ldotq + dim*m*m).expand());
 
-	e = dirac_slash(q, dim) *
-	    (dirac_slash(l, dim) + dirac_slash(q, dim) + m * dirac_ONE()) *
-	    dirac_slash(q, dim) *
+	e = dirac_slash(q, 4) *
+	    (dirac_slash(l, dim) + dirac_slash(q, 4) + m * dirac_ONE()) *
+	    dirac_slash(q, 4) *
 	    (dirac_slash(l, dim) + m * dirac_ONE());
 	e = dirac_trace(e).simplify_indexed(sp);
 	result += check_equal(e, 4*(2*ldotq*ldotq + q*q*ldotq - q*q*l*l + q*q*m*m).expand());
 
+	// stuff that had problems in the past
+	ex prop = dirac_slash(q, dim) - m * dirac_ONE();
+	e = dirac_slash(l, dim) * dirac_gamma5() * dirac_slash(l, dim) * prop;
+	e = dirac_trace(dirac_slash(q, dim) * e) - dirac_trace(m * e)
+	  - dirac_trace(prop * e);
+	result += check_equal(e, 0);
+
+	e = (dirac_gamma5() + dirac_ONE()) * dirac_gamma5();
+	e = dirac_trace(e);
+	result += check_equal(e, 4);
+
 	return result;
 }