scholarly journals Normal ordering and boundary conditions for fermionic string coordinates

2006 ◽  
Vol 638 (2-3) ◽  
pp. 272-274 ◽  
Author(s):  
Nelson R.F. Braga ◽  
Hector L. Carrion ◽  
Cresus F.L. Godinho
Keyword(s):  
Boundary Conditions ◽  
Normal Ordering ◽  
Fermionic String

FERMIONIC STRING MODELS AND ZN ORBIFOLDS

1989 ◽  
Vol 04 (24) ◽  
pp. 2339-2347 ◽  
Author(s):  
DAVID C. DUNBAR
Keyword(s):  
Boundary Conditions ◽  
World Sheet ◽  
Fermionic String ◽  
String Models ◽  
Special Case

It is shown that ZN orbifold models may, in special case be realised by a set world sheet fermions which have boundary conditions which are non-diagonal.

scholarly journals EFFECTIVE BOUNDARY ACTION IN THE FERMIONIC STRING THEORY

1989 ◽  
Vol 04 (21) ◽  
pp. 2041-2047
Author(s):  
A.V. MARSHAKOV
Keyword(s):  
String Theory ◽  
Boundary Conditions ◽  
Configuration Space ◽  
Path Integral ◽  
Riemann Surfaces ◽  
Special Choice ◽  
Local Boundary ◽  
Effective Boundary ◽  
Fermionic Fields ◽  
Fermionic String

The Polyakov path integral on Riemann surfaces with boundaries for the Neveu-Schwarz-Ramond (NSR) fermionic string is computed in the case of a special choice of the local boundary conditions for the fermionic fields. Effective boundary action is written explicitly by means of the functions defined on the double of the surface. The obtained expressions are used to study the behavior of the string propagator in the configuration space. The generalization of the effective fermionic action to the case of nonarchimedean strings is discussed.

scholarly journals Normal ordering and boundary conditions in open bosonic strings

2005 ◽  
Vol 46 (6) ◽  
pp. 062302 ◽  
Author(s):  
Nelson R. F. Braga ◽  
Hector L. Carrion ◽  
Cresus F. L. Godinho
Keyword(s):  
Boundary Conditions ◽  
Bosonic Strings ◽  
Normal Ordering

scholarly journals Exponential Formulas, Normal Ordering and the Weyl-Heisenberg Algebra

2021 ◽  
Author(s):  
Stjepan Meljanac ◽  
◽  
Rina Štrajn ◽  
◽  
◽  
...  
Keyword(s):  
Differential Equations ◽  
Boundary Conditions ◽  
Heisenberg Algebra ◽  
Higher Dimensions ◽  
Star Products ◽  
Normal Ordering ◽  
Noncommutative Spaces ◽  
Twist Operators

We consider a class of exponentials in the Weyl-Heisenberg algebra with exponents of type at most linear in coordinates and arbitrary functions of momenta. They are expressed in terms of normal ordering where coordinates stand to the left from momenta. Exponents appearing in normal ordered form satisfy differential equations with boundary conditions that could be solved perturbatively order by order. Two propositions are presented for the Weyl-Heisenberg algebra in 2 dimensions and their generalizations in higher dimensions. These results can be applied to arbitrary noncommutative spaces for construction of star products, coproducts of momenta and twist operators. They can also be related to the BCH formula.

Use of the Magnetostatic Analogue In Electromagnetic Lens Engineering

1970 ◽  
Vol 28 ◽  
pp. 360-361
Author(s):  
John W. Coleman
Keyword(s):  
Boundary Conditions ◽  
High Performance ◽  
Force Fields ◽  
Optical Design ◽  
Direct Conversion ◽  
Design Engineering ◽  
Design Data ◽  
Scalar Potentials ◽  
Geometric Elements ◽  
At Will

In the design engineering of high performance electromagnetic lenses, the direct conversion of electron optical design data into drawings for reliable hardware is oftentimes difficult, especially in terms of how to mount parts to each other, how to tolerance dimensions, and how to specify finishes. An answer to this is in the use of magnetostatic analytics, corresponding to boundary conditions for the optical design. With such models, the magnetostatic force on a test pole along the axis may be examined, and in this way one may obtain priority listings for holding dimensions, relieving stresses, etc..The development of magnetostatic models most easily proceeds from the derivation of scalar potentials of separate geometric elements. These potentials can then be conbined at will because of the superposition characteristic of conservative force fields.

A digital vocal tract simulator with boundary conditions at lips and glottis

1981 ◽  
Vol 64 (11) ◽  
pp. 18-26 ◽  
Author(s):  
Tetsuya Nomura ◽  
Nobuhiro Miki ◽  
Nobuo Nagai
Keyword(s):  
Boundary Conditions ◽  
Vocal Tract

Exploring the affective impact, boundary conditions, and antecedents of leader humility.

2018 ◽  
Vol 103 (9) ◽  
pp. 1019-1038 ◽  
Author(s):  
Lin Wang ◽  
Bradley P. Owens ◽  
Junchao (Jason) Li ◽  
Lihua Shi
Keyword(s):  
Boundary Conditions ◽  
Affective Impact ◽  
Leader Humility

Exploring personality variables as boundary conditions of the justice-job satisfaction relationship

2009 ◽  
Author(s):  
Sabrina Volpone ◽  
Cristina Rubino ◽  
Ari A. Malka ◽  
Christiane Spitzmueller ◽  
Lindsay Brown
Keyword(s):  
Job Satisfaction ◽  
Boundary Conditions ◽  
Personality Variables ◽  
Satisfaction Relationship

Intentionality Matters: Boundary Conditions of Task Sharing

2008 ◽  
Author(s):  
Silke Atmaca ◽  
Antje Hollander ◽  
Wolfgang Prinz
Keyword(s):  
Boundary Conditions ◽  
Task Sharing
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