RealTimeTransport::RenormalizedPT::ConductanceKernel Class Reference

#include <RealTimeTransport/RenormalizedPT/ConductanceKernel.h>

This class computes the conductance kernel via the renormalized perturbation theory. This kernel can be used to compute the stationary conductance \( dI_r/d\mu_r \) of reservoir \( r \) without numerical differentiation, which is numerically more stable. The memory and current kernel must be computed first in order to use this class. A cross conductance \( dI_r/d\mu_{r'} \) can be obtained by first computing the current kernel for resrevoir \( r \), and then the conductance kernel for reservoir \( r' \).

Public Member Functions
	ConductanceKernel () noexcept
	Constructor.
	ConductanceKernel (ConductanceKernel &&other) noexcept
	Move constructor.
	ConductanceKernel (const ConductanceKernel &other)
	Copy constructor.
ConductanceKernel &	operator= (ConductanceKernel &&other)
	Move assignment operator.
ConductanceKernel &	operator= (const ConductanceKernel &other)
	Copy assignment operator.
	ConductanceKernel (const MemoryKernel &K, const CurrentKernel &KI, const Model::OperatorType &stationaryState, int r, Order order, SciCore::Real tMax, SciCore::Real errorGoal, int block=-1)
	Computes the conductance kernel for a given model.
	ConductanceKernel (const MemoryKernel &K, const CurrentKernel &KI, const Model::OperatorType &stationaryState, int r, Order order, SciCore::Real tMax, SciCore::Real errorGoal, tf::Executor &executor, int block=-1)
	Computes the conductance kernel for a given model in parallel.
int	r () const noexcept
	Returns the reservoir index for which the conductance kernel was computed.
SciCore::Real	tMax () const
	Returns the maximum simulation time.
SciCore::Real	errorGoal () const noexcept
	Returns the error goal of the computation.
SciCore::Real	conductance () const
	Returns the (stationary) conductance.
Model::OperatorType	dState () const
	Returns the stationary state derivative \( d\rho/d\mu_r \).

Constructor & Destructor Documentation

ConductanceKernel() [1/2]

RealTimeTransport::RenormalizedPT::ConductanceKernel::ConductanceKernel	(	const MemoryKernel &	K,
		const CurrentKernel &	KI,
		const Model::OperatorType &	stationaryState,
		int	r,
		Order	order,
		SciCore::Real	tMax,
		SciCore::Real	errorGoal,
		int	block = -1 )

Computes the conductance kernel for a given model.

Parameters

K	The memory kernel of the model.
KI	The current kernel of the model.
stationaryState	The Stationary state of the model.
r	Index of the reservoir \( r=0,1,\dots \)
order	The order of the renormalized perturbation series.
tMax	Maximum time until the conductance kernel is resolved.
errorGoal	Error goal of the conductance kernel computation.
block	Computes the complete conductance kernel if block==-1, otherwise computes only a single block with index block.

ConductanceKernel() [2/2]

RealTimeTransport::RenormalizedPT::ConductanceKernel::ConductanceKernel	(	const MemoryKernel &	K,
		const CurrentKernel &	KI,
		const Model::OperatorType &	stationaryState,
		int	r,
		Order	order,
		SciCore::Real	tMax,
		SciCore::Real	errorGoal,
		tf::Executor &	executor,
		int	block = -1 )

Computes the conductance kernel for a given model in parallel.

Parameters

K	The memory kernel of the model.
KI	The current kernel of the model.
stationaryState	The Stationary state of the model.
r	Index of the reservoir \( r=0,1,\dots \)
order	The order of the renormalized perturbation series.
tMax	Maximum time until the conductance kernel is resolved.
errorGoal	Error goal of the conductance kernel computation.
executor	A Taskflow executor managing threads.
block	Computes the complete conductance kernel if block==-1, otherwise computes only a single block with index block.