HermitianFermionTerm Class
Definition
Important
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Class representing a sequence of fermionic raising and lowering operators, subject to the additional constraints:
- Normal-ordered, where all raising operators are to the left of all lowering operators.
- Index-ordered, where are raising(lowering) operators are in ascending(descending) order.
- Hermitian, and is assumed to be implicitly summed with its Hermitian conjugate if not explicitly Hermitian.
public class HermitianFermionTerm : Microsoft.Quantum.Chemistry.Fermion.FermionTerm, IEquatable<Microsoft.Quantum.Chemistry.Fermion.HermitianFermionTerm>, Microsoft.Quantum.Chemistry.ITermIndex<Microsoft.Quantum.Chemistry.TermType.Fermion,Microsoft.Quantum.Chemistry.Fermion.HermitianFermionTerm>type HermitianFermionTerm = class
inherit FermionTerm
interface ITermIndex<TermType.Fermion, HermitianFermionTerm>
interface IEquatable<HermitianFermionTerm>Public Class HermitianFermionTerm
Inherits FermionTerm
Implements IEquatable(Of HermitianFermionTerm), ITermIndex(Of TermType.Fermion, HermitianFermionTerm)- Inheritance
-
HermitianFermionTerm
- Implements
Constructors
| HermitianFermionTerm() |
Constructor for empty instance. |
| HermitianFermionTerm(IEnumerable<Int32>) |
Constructs a Hermitian fermion term with an equal number of creation and annihilation operators from a sequence of integers. |
| HermitianFermionTerm(IEnumerable<LadderOperator<Int32>>, Int32) |
Constructs a Hermitian fermion term from a normal-ordered sequence of ladder operators. |
| HermitianFermionTerm(LadderSequence<Int32>) |
Constructs a Hermitian fermion term from a normal-ordered sequence of ladder operators. |
Properties
| Coefficient |
sign (-1,+1) coefficient of ladder operators. (Inherited from LadderSequence<TIndex>) |
| Sequence |
Sequence of ladder operators. (Inherited from LadderSequence<TIndex>) |
| Sign |
Returns the sign of this fermion term. |
| TermType |
Return the category of this fermion term. |
Methods
| _JsonGetCoefficient() |
Returns sign coefficient of ladder operator sequence. (Inherited from LadderSequence<TIndex>) |
| _JsonGetSequence() |
Returns ladder operator sequence. (Inherited from LadderSequence<TIndex>) |
| _JsonSetCoefficient(Int32) |
Sets sign coefficient of ladder operator sequence. (Inherited from LadderSequence<TIndex>) |
| _JsonSetObject(Object) |
Used only for JSON serialization. (Inherited from LadderSequence<TIndex>) |
| _JsonSetSequence(Object) |
Sets ladder operator sequence. (Inherited from LadderSequence<TIndex>) |
| Clone() |
Creates a copy of this instance. |
| Equals(HermitianFermionTerm) | |
| Equals(LadderSequence<TIndex>) | (Inherited from LadderSequence<TIndex>) |
| Equals(Object) | |
| GetHashCode() | |
| IsInCanonicalOrder() |
Checks if raising operators indices are in ascending order, then if lowering operator indices are in descending order. |
| IsInIndexAnnihilationCanonicalOrder() |
Checks whether the annihilation operator sequence of a LadderSequence is in canonical order. This means
|
| IsInIndexCreationCanonicalOrder() |
Checks whether the creation operator sequence of a LadderSequence is in canonical order. This means
|
| IsInIndexOrder() |
Checks if raising operators indices are in ascending order, then if lowering operator indices are in descending order. (Inherited from NormalOrderedSequence<TIndex>) |
| IsInNormalOrder() |
Checks whether all raising operators are to the left of all lowering operators. (Inherited from LadderSequence<TIndex>) |
| Multiply(LadderSequence<TIndex>, LadderSequence<TIndex>) |
Concatenates two Fermion terms. (Inherited from LadderSequence<TIndex>) |
| NormalizeToIndexOrder() |
Converts a NormalOrderedLadderSequence to index order. In general, this can generate new terms and modifies the coefficient. (Inherited from IndexOrderedSequence<TIndex>) |
| ResetSign() |
Sets the sign of this fermion term to one. |
| SelectIndex<TNewIndex>(Func<TIndex,TNewIndex>) |
Creates a new ladder sequence with a different indexing scheme. (Inherited from LadderSequence<TIndex>) |
| ToIndices() |
Returns list of indices of the ladder operator sequence. (Inherited from LadderSequence<TIndex>) |
| ToLadderSequence() |
Returns a copy of the ladder sequence base class. (Inherited from LadderSequence<TIndex>) |
| ToRaisingLowering() |
Returns sequence of raising and lowering types of the ladder operator sequence. (Inherited from LadderSequence<TIndex>) |
| ToString() |
Returns a human-readable description of this object. (Inherited from LadderSequence<TIndex>) |
| UniqueIndices() |
Counts the number of unique system indices across all LadderOperator<TIndex> terms in a LadderSequence<TIndex> (Inherited from LadderSequence<TIndex>) |
Operators
| Implicit(ValueTuple<RaisingLowering,Int32>[] to HermitianFermionTerm) |
Extension Methods
| ToJordanWignerPauliTerms(FermionTerm, TermType+Fermion, Double) |
Creates all fermion terms generated by all symmetries of an orbital integral. |
| ToIndexOrder<TIndex>(LadderSequence<TIndex>) |
Converts a LadderSequence to normal order, then index order. In general, this can generate new terms and modifies the coefficient. |
| ToNormalOrder<TIndex>(LadderSequence<TIndex>) |
Converts a LadderSequence to normal order. In general, this can generate new terms and modifies the coefficient. |