magnopy.Convention.get_modified#

method

Convention.get_modified(multiple_counting: bool = None, spin_normalized: bool = None, c1: float = None, c21: float = None, c22: float = None, c31: float = None, c32: float = None, c33: float = None, c41: float = None, c421: float = None, c422: float = None, c43: float = None, c44: float = None, name: str = None)[source]#

Returns the new instance of the Convention class based on the called one with changed given properties.

Parameters:

multiple_countingbool, optional: Whether the pairs of spins are counted multiple times in the Hamiltonian's sums. Modified to the given value, if None, then kept the same as in the original convention.
spin_normalizedbool, optional: Whether spin vectors/operators are normalized to 1. If True, then spin vectors/operators are normalized. Modified to the given value, if None, then kept the same as in the original convention.
c1float, optional: Numerical factor before the (one spin & one site) term of the Hamiltonian. Modified to the given value, if None, then kept the same as in the original convention.
c21float, optional: Numerical factor before the (two spins & one site) term of the Hamiltonian. Modified to the given value, if None, then kept the same as in the original convention.
c22float, optional: Numerical factor before the (two spins & two sites) term of the Hamiltonian. Modified to the given value, if None, then kept the same as in the original convention.
c31float, optional: Numerical factor before the (three spins & one site) term of the Hamiltonian. Modified to the given value, if None, then kept the same as in the original convention.
c32float, optional: Numerical factor before the (three spins & two sites) term of the Hamiltonian. Modified to the given value, if None, then kept the same as in the original convention.
c33float, optional: Numerical factor before the (three spins & three sites) term of the Hamiltonian. Modified to the given value, if None, then kept the same as in the original convention.
c41float, optional: Numerical factor before the (four spins & one site) term of the Hamiltonian. Modified to the given value, if None, then kept the same as in the original convention.
c421float, optional: Numerical factor before the (four spins & two sites & 1+3) term of the Hamiltonian. Modified to the given value, if None, then kept the same as in the original convention.
c422float, optional: Numerical factor before the (four spins & two sites & 2+2) term of the Hamiltonian. Modified to the given value, if None, then kept the same as in the original convention.
c43float, optional: Numerical factor before the (four spins & three sites) term of the Hamiltonian. Modified to the given value, if None, then kept the same as in the original convention.
c44float, optional: Numerical factor before the (four spins & four sites) term of the Hamiltonian. Modified to the given value, if None, then kept the same as in the original convention.
namestr, optional: A label for the convention. Any string, case-insensitive. Modified to the given value, if None, then kept the same as in the original convention.

Examples

>>> import magnopy
>>> conv = magnopy.Convention(
... name="original",
... multiple_counting = True,
... spin_normalized = False,
... c1 = 1,
... c21 = 1,
... c22 = -1)
>>> conv.summary()
original convention where
  * Bonds are counted multiple times in the sum;
  * Spin vectors are not normalized;
  * c1 = 1.0;
  * c21 = 1.0;
  * c22 = -1.0;
  * Undefined c31 factor;
  * Undefined c32 factor;
  * Undefined c33 factor;
  * Undefined c41 factor;
  * Undefined c421 factor;
  * Undefined c422 factor;
  * Undefined c43 factor;
  * Undefined c44 factor.
>>> mod_conv = conv.get_modified(
... name="modified",
... c22 = 1,
... c33 = -3)
>>> mod_conv.summary()
modified convention where
  * Bonds are counted multiple times in the sum;
  * Spin vectors are not normalized;
  * c1 = 1.0;
  * c21 = 1.0;
  * c22 = 1.0;
  * Undefined c31 factor;
  * Undefined c32 factor;
  * c33 = -3.0;
  * Undefined c41 factor;
  * Undefined c421 factor;
  * Undefined c422 factor;
  * Undefined c43 factor;
  * Undefined c44 factor.

magnopy.Convention.get_modified#

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