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43 lines
820 B
Python
43 lines
820 B
Python
from pytriqs.operators.operators2 import *
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import itertools
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C_list = [c(1,0),c(2,0),c(3,0)]
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Cd_list = [c_dag(1,0), c_dag(2,0), c_dag(3,0)]
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print "Anticommutators:"
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for Cd,C in itertools.product(Cd_list,C_list):
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print "{", Cd, ",", C, "} =", Cd*C + C*Cd
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print "Commutators:"
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for Cd,C in itertools.product(Cd_list,C_list):
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print "[", Cd, ",", C, "] =", Cd*C - C*Cd
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# Algebra
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x = c(0,0)
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y = c_dag(1,0)
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print
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print "Algebra:"
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print "x =", x
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print "y =", y
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print "-x =", -x
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print "x + 2.0 =", x + 2.0
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print "2.0 + x =", 2.0 + x
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print "x - 2.0 =", x - 2.0
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print "2.0 - x =", 2.0 - x
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print "3.0*y =", 3.0*y
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print "y*3.0 =", y*3.0
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print "x + y =", x + y
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print "x - y =", x - y
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print "(x + y)*(x - y) =", (x + y)*(x - y)
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# N^3
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print
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print "N^3:"
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N = n(0,'up') + n(0,'dn')
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N3 = N*N*N
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print "N =", N
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print "N^3 =", N3
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