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High-Temperature QCD Static Potential beyond Leading Order.

Margaret E Carrington1,2, Cristina Manuel3,4, Joan Soto4,5

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Summary
This summary is machine-generated.

We calculated corrections to the QCD static potential in hot media, finding significant real and imaginary parts. Our results aid lattice QCD calculations for bound states transitioning from narrow to wide resonances.

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Area of Science:

  • High-energy physics
  • Quantum chromodynamics (QCD)
  • Statistical QCD

Background:

  • Understanding the behavior of Quantum Chromodynamics (QCD) in high-temperature media is crucial for describing phenomena like the quark-gluon plasma.
  • Bound states in such media undergo transitions from narrow resonances to wide ones, a phenomenon not fully understood.
  • Real-time properties of the QCD static potential are essential for characterizing these transitions.

Purpose of the Study:

  • To calculate the leading and next-to-leading corrections to the real-time QCD static potential in a high-temperature medium.
  • To investigate the transition region where bound states change from narrow resonances to wide ones.
  • To provide insights for lattice QCD calculations.

Main Methods:

  • Utilizing the hard thermal loop (HTL) effective theory to calculate loop diagrams.
  • Incorporating power corrections to the hard thermal loop Lagrangian within QCD.
  • Comparing theoretical calculations with recent lattice QCD data.

Main Results:

  • Sizable contributions were found for both the real and imaginary parts of the QCD static potential.
  • The calculations provide a theoretical framework for understanding the spectral properties of bound states in hot QCD.
  • Consistency checks were performed against various lattice QCD calculation methods.

Conclusions:

  • The calculated corrections offer a more refined understanding of the QCD static potential in high-temperature environments.
  • The results are valuable for guiding and improving future lattice QCD simulations, particularly in the resonance-to-width transition region.
  • This work bridges theoretical calculations and experimental/lattice observations in hot QCD.