Covariant closed string coherent states.

Area of Science:

• Theoretical Physics
• String Theory
• Cosmology

Background:

• Cosmic strings are hypothetical topological defects in spacetime.
• Understanding fundamental string states is crucial for string theory and cosmology.
• Previous work lacked a direct construction of covariant coherent states for cosmic strings.

Purpose of the Study:

• To provide the first construction of covariant coherent closed string states.
• To establish a clear mapping between classical string descriptions and quantum string states.
• To identify these states with fundamental cosmic strings.

Main Methods:

• Development of covariant coherent state construction in string theory.
• Formulation of requirements for string states to represent cosmic strings.
• Creation of an explicit map relating classical strings, light cone gauge quantum states, and covariant vertex operators.

Main Results:

• The first construction of covariant coherent closed string states is presented.
• A simple and explicit map is provided, connecting three different string descriptions.
• The resulting coherent state vertex operators correspond to arbitrary classical closed string loops.

Conclusions:

• The constructed states can be identified with fundamental cosmic strings.
• The established map provides a powerful tool for relating classical and quantum string descriptions.
• This work offers a new perspective on the nature and description of cosmic strings.