Duality and decay of macroscopic F strings

Area of Science:

• String Theory
• Quantum Field Theory
• High-Energy Physics

Background:

• Fundamental string loops are crucial in theoretical physics.
• Understanding their decay is key to exploring string dynamics.
• Existing models face computational challenges for complex loops.

Purpose of the Study:

• To investigate the decay of fundamental string loops.
• To leverage the coherent vertex operator construction for efficiency.
• To analyze mass shifts and radiation properties of string states.

Main Methods:

• Utilizing the Hindmarsh and Skliros coherent vertex operator construction.
• Calculating decay rates and mass shifts for vertex operators and their duals.
• Computing power and decay rates for massless infrared radiation.

Main Results:

• The vertex operator construction proves computationally efficient.
• Decay rates and mass shifts of dual vertex operators are equal at leading order.
• Massless infrared radiation for a specific trajectory matches the low-energy effective theory.
• A novel relation between gravitational and axion-dilaton radiation is discovered.

Conclusions:

• The coherent vertex operator construction offers a powerful tool for string loop decay analysis.
• The findings support and extend existing low-energy effective theories.
• This work opens avenues for studying string evolution in previously inaccessible regimes.