The QCD moat regime and its real-time properties
arXiv:2412.15949 · doi:10.1103/PhysRevD.111.094026
Abstract
Dense QCD matter may exhibit crystalline phases. Their existence is reflected in a moat regime, where mesonic correlations feature spatial modulations. We study the realtime properties of pions at finite temperature and density in QCD in order to elucidate the nature of this regime. We show that the moat regime arises from particle-hole-like fluctuations near the Fermi surface. This gives rise to a characteristic peak in the spectral function of the pion at nonzero \emph{spacelike} momentum. This peak can be interpreted as a new quasi particle, the moaton. In addition, our framework also allows us to directly test the stability of the homogeneous chiral phase against the formation of an inhomogeneous condensate in QCD. We find that the formation of such a phase is highly unlikely for baryon chemical potentials \,MeV.
20 pages, 16 figures
References in corpus (93)
- Aspects of the Functional Renormalisation Group
- Chiral crossover in QCD at zero and non-zero chemical potentials
- Evidence for an Anisotropic State of Two-Dimensional Electrons in High Landau Levels
- The nonperturbative functional renormalization group and its applications
- Maximum Entropy Analysis of the Spectral Functions in Lattice QCD
- Charge Density Wave in Two-Dimensional Electron Liquid in Weak Magnetic Field
- Mapping the Phases of Quantum Chromodynamics with Beam Energy Scan
- Search for the QCD Critical Point with Fluctuations of Conserved Quantities in Relativistic Heavy-Ion Collisions at RHIC : An Overview
- The QCD crossover at finite chemical potential from lattice simulations
- Strongly Anisotropic Transport in Higher Two-Dimensional Landau Levels
- The QCD phase structure at finite temperature and density
- Liquid Crystal Phases of Quantum Hall Systems
- The Ground State of a Two-Dimensional Electron Liquid in a Weak Magnetic Field
- Exact results for interacting electrons in high Landau levels
- Inhomogeneous chiral condensates
- Renormalization Flow of Bound States
- A novel Bayesian approach to spectral function reconstruction
- From Quarks and Gluons to Hadrons: Chiral Symmetry Breaking in Dynamical QCD
- Chiral phase structure and critical end point in QCD
- QCD critical region and higher moments for three flavor models
- Universality of spontaneous chiral symmetry breaking in gauge theories
- Quark-meson-diquark model for two-color QCD
- Exact flow equation for composite operators
- Spectral Functions for the Quark-Meson Model Phase Diagram from the Functional Renormalization Group
- Nevanlinna Analytical Continuation
- Scalar density fluctuation at critical end point in NJL model
- Reconstructing the gluon
- Real time correlation functions and the functional renormalisation group
- Locating the critical endpoint of QCD: mesonic backcoupling effects
- Artificial Neural Network Approach to the Analytic Continuation Problem
- Gluon spectral functions and transport coefficients in Yang--Mills theory
- The Vacuum Structure of Vector Mesons in QCD
- Deconfinement transition in SU(N) theories from perturbation theory
- Functional renormalisation group approach to far-from-equilibrium quantum field dynamics
- QCD at finite temperature and density within the fRG approach: An overview
- In-Medium Spectral Functions of Vector- and Axial-Vector Mesons from the Functional Renormalization Group
- On the scaling behavior of the chiral phase transition in QCD in finite and infinite volume
- Reconstructing QCD Spectral Functions with Gaussian Processes
- Reconstructing the thermal Green functions at real times from those at imaginary times
- Analytic continuation via domain-knowledge free machine learning
- Chiral Susceptibility in (2+1)-flavour QCD
- Spectral Reconstruction with Deep Neural Networks
- Real-Time Correlation Functions in the O(N) Model from the Functional Renormalization Group
- Analytical Continuation of Matrix-Valued Functions: Carathéodory Formalism
- Towards quantitative precision in the chiral crossover: masses and fluctuation scales
- Fierz-complete NJL model study III: Emergence from quark-gluon dynamics
- Bayesian location of the QCD critical point from a holographic perspective
- Analytic continuation of functional renormalization group equations
- Finite temperature spectral functions in the O(N)-model
- Signatures of Moat Regimes in Heavy-Ion Collisions
- Far-from-equilibrium quantum many-body dynamics
- Spectral representation of lattice gluon and ghost propagators at zero temperature
- Absence of Bose condensation on lattices with moat bands
- How transverse thermal fluctuations disorder a condensate of chiral spirals into a quantum spin liquid
- Functional renormalization group analysis of the soft mode at the QCD critical point
- A test on analytic continuation of thermal imaginary-time data
- Complex saddle points in QCD at finite temperature and density
- Fluctuations in cool quark matter and the phase diagram of Quantum Chromodynamics
- Modulation and correlations lengths in systems with competing interactions
- Bayesian inference of non-positive spectral functions in quantum field theory
- QCD phase transitions in the light quark chiral limit
- Self-consistent Spectral Functions in the Model from the FRG
- Spectral functions from the real-time functional renormalization group
- Meson Spectral Functions at Finite Temperature and Isospin Density with Functional Renormalization Group
- Emergent Hadrons and Diquarks
- Fermionic spectral functions with the Functional Renormalization Group
- Flowing with the Temporal Renormalisation Group
- Particle Interferometry in a Moat Regime
- Ripples of the QCD Critical Point
- The Lifshitz Regime and its Experimental Signals
- Mobile impurity in a Fermi sea from the functional renormalization group analytically continued to real time
- Tachyonic instability of the scalar mode prior to QCD critical point based on Functional renormalization-group method
- Non-perturbative strong coupling at timelike momenta
- Universality of Pattern Formation
- Phase structure of 2+1-flavour QCD and the magnetic equation of state
- Microscopic Model for Fractional Quantum Hall Nematics
- Real-time methods for spectral functions
- Real-time dynamics of the scalar theory within the fRG approach
- Collective charge excitations and the metal-insulator transition in the square lattice Hubbard-Coulomb model
- Yang-Mills glueball masses from spectral reconstruction
- In-medium spectral functions and dilepton rates with the Functional Renormalization Group
- Universality of modulation length (and time) exponents
- Self-consistent model spectral functions from analytically continued FRG flows
- Regularization effects in the Nambu-Jona-Lasinio model: Strong scheme dependence of inhomogeneous phases and persistence of the moat regime
- Neural network approach to reconstructing spectral functions and complex poles of confined particles
- symmetry, pattern formation, and finite-density QCD
- Screening effects in Relativistic Models of Dense Matter at Finite Temperature
- Inhomogeneous condensation in the Gross-Neveu model in noninteger spatial dimensions . II. Nonzero temperature and chemical potential
- Lattice QCD estimates of thermal photon production from the QGP
- Quark Potential in a Quark-Meson Plasma
- Spatially oscillating correlation functions in -dimensional four-fermion models: The mixing of scalar and vector modes at finite density
- Modified dilepton production rate from charged pion-pair annihilation in the inhomogeneous chiral condensed phase
- Oscillatory behavior of the in-medium interparticle potential in hot gauge system with scalar bound states