Triple

Target class: QCD effective model
Context triple: [Polyakov–Nambu–Jona-Lasinio model, instanceOf, QCD effective model]

• A. low-energy effective field theory chosen
  A low-energy effective field theory is a simplified quantum field theory that accurately describes physical phenomena at energies much lower than some high-energy cutoff by including only the relevant degrees of freedom and interactions at that scale.
• B. particle physics model
  A particle physics model is a theoretical framework that describes the fundamental particles and their interactions, aiming to explain and predict phenomena at the smallest scales of matter and energy.
• C. CP-violating system
  A CP-violating system is a physical system whose interactions do not remain invariant under the combined operations of charge conjugation (C) and parity transformation (P), leading to observable asymmetries between matter and antimatter.
• D. electroweak theory
  Electroweak theory is a unified quantum field theory that describes the electromagnetic and weak nuclear forces as different manifestations of a single SU(2)×U(1) gauge symmetry, spontaneously broken via the Higgs mechanism.
• E. regularization scheme in quantum field theory
  A regularization scheme in quantum field theory is a systematic procedure for modifying divergent integrals or sums—typically by introducing an auxiliary parameter or cutoff—so that they become finite and mathematically well-defined while preserving as much of the theory’s symmetry and structure as possible.
• F. None of above.