LoopHelasAmplitude object, behaving exactly as an amplitude except
that it also contains loop wave-functions closed on themselves, building
an amplitude corresponding to the closed loop.
new empty dictionary
|
|
|
|
is_equivalent(self,
other)
Comparison between different LoopHelasAmplitude in order to recognize
which ones are equivalent at the level of the file output. |
source code
|
|
|
|
|
|
D[k] if k in D, else d
|
|
|
|
filter(self,
name,
value)
Filter for valid LoopHelasAmplitude property values. |
source code
|
|
|
|
|
|
|
|
|
|
|
|
|
get_final_loop_wavefunction(self)
Return the non-external loop mother of the helas amplitude building
this loop amplitude |
source code
|
|
|
|
get_base_diagram(self,
wf_dict,
vx_list=[],
optimization=1)
Return the loop_base_objects.LoopDiagram which corresponds to this
amplitude, using a recursive method for the wavefunctions. |
source code
|
|
|
|
set_mothers_and_pairing(self)
Sets the mothers of this amplitude in the same order as they will be
used in the arguments of the helas calls building this loop |
source code
|
|
|
|
|
|
|
|
|
|
get_masses(self)
Returns the list of the masses of the loop particles as they should
appear for cuttools (L-cut particles specified last) |
source code
|
|
|
|
get_couplings(self)
Returns the list of the couplings of the different helas objects
building this HelasLoopAmplitude. |
source code
|
|
|
|
|
|
|
get_call_key(self)
The helas call to a loop is simple and only depends on the number of
loop lines and mothers. |
source code
|
|
|
|
get_orders(self)
Compute the orders building this loop amplitude only (not from the
struct wavefunctions. |
source code
|
|
|
|
get_analytic_info(self,
info,
alohaModel=None)
Returns an analytic information of the loop numerator, for example
the 'wavefunction_rank' i.e. |
source code
|
|
|
|
compute_analytic_information(self,
alohaModel)
Make sure that all analytic pieces of information about this
wavefunction are computed so that they can be recycled later,
typically without the need of specifying an alohaModel. |
source code
|
|
|
|
|
|
|
|
|
Inherited from core.helas_objects.HelasAmplitude:
__eq__,
__ne__,
__str__,
check_and_fix_fermion_flow,
find_outgoing_number,
get_aloha_info,
get_base_vertex,
get_color_indices,
get_conjugate_index,
get_epsilon_order,
get_s_and_t_channels,
has_multifermion,
needs_hermitian_conjugate,
nice_string,
set,
set_coupling_color_factor
Inherited from core.base_objects.PhysicsObject:
__getitem__,
__repr__,
is_valid_prop
Inherited from dict:
__cmp__,
__contains__,
__delitem__,
__ge__,
__getattribute__,
__gt__,
__iter__,
__le__,
__len__,
__lt__,
__new__,
__setitem__,
__sizeof__,
clear,
copy,
fromkeys,
has_key,
items,
iteritems,
iterkeys,
itervalues,
keys,
pop,
popitem,
setdefault,
update,
values,
viewitems,
viewkeys,
viewvalues
Inherited from object:
__delattr__,
__format__,
__reduce__,
__reduce_ex__,
__setattr__,
__subclasshook__
|