uni20::models::SpinHalfU1Site Struct Reference

U(1)-symmetric spin-half local space and its two state charges. More...

#include <spin_half_heisenberg.hpp>

Collaboration diagram for uni20::models::SpinHalfU1Site:

Public Member Functions
auto	qnum (SpinHalfState state) const -> QNum const &
	Return the quantum number of one local state.

Static Public Member Functions
static constexpr auto	coordinate (SpinHalfState state) noexcept -> std::size_t
	Return the physical-space coordinate of one local state.

Public Attributes
QNum	down
	Quantum number of |down>.
LocalSpace	space
	Physical state space in up-then-down order.
Symmetry	symmetry
	U(1) symmetry context shared by every model object.
QNum	up
	Quantum number of |up>.

Detailed Description

U(1)-symmetric spin-half local space and its two state charges.

States are ordered as |up> then |down>, with charges +1/2 and -1/2 under the selected U(1) component.

Member Function Documentation

coordinate()

static constexpr auto uni20::models::SpinHalfU1Site::coordinate ( SpinHalfState  state ) -> std::size_t

inlinestaticconstexprnoexcept

Return the physical-space coordinate of one local state.

Parameters

state

Local spin state.

Returns

Zero for up and one for down.

qnum()

auto uni20::models::SpinHalfU1Site::qnum ( SpinHalfState  state ) const -> QNum const&

inline

Return the quantum number of one local state.

Parameters

state

Local spin state.

Returns

Stored up or down quantum number.

Member Data Documentation

down

QNum uni20::models::SpinHalfU1Site::down

Quantum number of |down>.

space

LocalSpace uni20::models::SpinHalfU1Site::space

Physical state space in up-then-down order.

symmetry

Symmetry uni20::models::SpinHalfU1Site::symmetry

U(1) symmetry context shared by every model object.

up

QNum uni20::models::SpinHalfU1Site::up

Quantum number of |up>.

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The documentation for this struct was generated from the following file:

• spin_half_heisenberg.hpp