mty::wick::Node Class Reference

Represents a contractible mty::QuantumField in the context of Wick contraction. More...

#include <graph.h>

Inheritance diagram for mty::wick::Node:

Public Member Functions
	Node (const mty::QuantumField *t_field)
	Constructor with one parameter. Initializes a NULL partner. More...
	Node (const Node &node)=default
	Copy constructor = C++ default.
	Node (Node &&node)=default
	Copy constructor = C++ default.
bool	isFree () const
	Tells if the Node is free or not. More...

Static Public Member Functions
static std::vector< std::shared_ptr< Node > >	copyGraph (std::vector< std::shared_ptr< Node >> const &init)

Data Fields
const mty::QuantumField *	field
	mty::QuantumField represented by the node in the graph.
std::weak_ptr< Node >	partner
	std::weak_ptr to the Node with which it is contracted, if it is. Else the value is empty.

Detailed Description

Represents a contractible mty::QuantumField in the context of Wick contraction.

A node is by definition a single power of mty::QuantumField. It means that a vertex with non trivial powers of a field will be divided in several nodes, one for each power. For example, \( \frac{\lambda}{3}\phi (X)^3 \) is divided in 3 nodes, each Node being for the field \( \phi (X) \). A node can be contracted with another and posess a pointer to its partner in this case. Only std::shared_ptr to Node are used in the program (Node objects that are already contracted are shared by several graphs) and the pointer to the partner is then a std::weak::ptr to avoid a circular owning pattern.

Constructor & Destructor Documentation

Node()

mty::wick::Node::Node ( const mty::QuantumField *  t_field )

inlineexplicit

Constructor with one parameter. Initializes a NULL partner.

Parameters

t_field

mty::QuantumField represented by the node.

Member Function Documentation

isFree()

bool mty::wick::Node::isFree ( ) const

inline

Tells if the Node is free or not.

Returns

True if the Node has no partner.

False if the Node has a non NULL partner, i.e. is contracted.

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The documentation for this class was generated from the following files:

• include/graph.h
• src/graph.cpp