RealTimeTransport::IteratedRG::MemoryKernel Class Reference

#include <RealTimeTransport/IteratedRG/MemoryKernel.h>

Defines the memory kernel computed via the renormalization group iteration.

Public Member Functions
	MemoryKernel () noexcept
	Constructor.
	MemoryKernel (MemoryKernel &&other) noexcept
	Move constructor.
	MemoryKernel (const MemoryKernel &other)
	Copy constructor.
MemoryKernel &	operator= (MemoryKernel &&other)
	Move assignment operator.
MemoryKernel &	operator= (const MemoryKernel &other)
	Copy assignment operator.
	MemoryKernel (const std::unique_ptr< Model > &model, Order order, SciCore::Real tMax, SciCore::Real errorGoal)
	Computes the memory kernel for a given model.
	MemoryKernel (const std::unique_ptr< Model > &model, Order order, SciCore::Real tMax, SciCore::Real errorGoal, tf::Executor &executor)
	Computes the memory mernel for a given model in parallel.
bool	operator== (const MemoryKernel &other) const noexcept
	Operator testing for equality.
bool	operator!= (const MemoryKernel &other) const noexcept
	Operator testing for inequality.
const Model *	model () const noexcept
	Returns a pointer to the model.
SciCore::Real	tMax () const
	Returns the maximum simulation time.
SciCore::Real	errorGoal () const noexcept
	Returns the error goal of the computation.
const BlockDiagonalMatrix &	LInfty () const noexcept
	Returns the renormalized Liouvillian \(-i L_{\infty}\).
BlockDiagonalCheb &	K () noexcept
	Returns \(-i K(t)\), where \(K(t)\) denotes the memory kernel.
const BlockDiagonalCheb &	K () const noexcept
	Returns \(-i K(t)\), where \(K(t)\) denotes the memory kernel.
BlockDiagonalMatrix	zeroFrequency () const
	Returns \(-i L_{\infty} -i \hat K(0)\), where \(L_{\infty}\) denotes the renormalized Liouvillian and \(\hat K(0)\) the memory kernel at zero frequency.
Model::OperatorType	stationaryState (int block=-1) const
	Returns the stationary state. This method assumes that the stationary state is unique.

Constructor & Destructor Documentation

MemoryKernel() [1/2]

RealTimeTransport::IteratedRG::MemoryKernel::MemoryKernel	(	const std::unique_ptr< Model > &	model,
		Order	order,
		SciCore::Real	tMax,
		SciCore::Real	errorGoal )

Computes the memory kernel for a given model using the renormalization group iteration.

Parameters

model	The model for which the memory kernel is computed.
order	Order of the RG iteration.
tMax	Maximum time until the memory kernel is resolved.
errorGoal	Error goal of the memory kernel computation.

MemoryKernel() [2/2]

RealTimeTransport::IteratedRG::MemoryKernel::MemoryKernel	(	const std::unique_ptr< Model > &	model,
		Order	order,
		SciCore::Real	tMax,
		SciCore::Real	errorGoal,
		tf::Executor &	executor )

Computes the memory kernel for a given model using the renormalization group iteration in parallel.

Parameters

model	The model for which the memory kernel is computed.
order	Order of the RG iteration.
tMax	Maximum time until the memory kernel is resolved.
errorGoal	Error goal of the memory kernel computation.
executor	An excecutor managing multiple threads.