We construct an exactly solvable relativistic model that embeds the anomalous inverse-square interaction into a non-Hermitian Klein-Gordon field theory through a purely imaginary, scale-invariant scalar potential. The stationary field equation reduces to an inverse-square Schrodinger-type problem with a quadratic spectral parameter. Imposing a strictly outgoing boundary condition at the singularity-interpreted as irreversible absorption-selects a unique physical realization and converts the fall-to-the-center instability into a discrete, log-periodic spectrum of complex energies. The resulting decay rates exhibit universal geometric spacing, determined solely by the anomalous scaling exponent and insensitive to microscopic short-distance regularization. This structure defines an emergent kinematic energy scale that controls dissipative dynamics and provides a minimal analytic framework for studying scale anomaly, boundary-condition-induced non-Hermiticity, and quantized dissipation in relativistic open quantum systems.
We construct an exactly solvable relativistic model that embeds the anomalous inverse-square interaction into a non-Hermitian Klein-Gordon field theory through a purely imaginary, scale-invariant scalar potential. The stationary field equation reduces to an inverse-square Schrodinger-type problem with a quadratic spectral parameter. Imposing a strictly outgoing boundary condition at the singularity-interpreted as irreversible absorption-selects a unique physical realization and converts the fall-to-the-center instability into a discrete, log-periodic spectrum of complex energies. The resulting decay rates exhibit universal geometric spacing, determined solely by the anomalous scaling exponent and insensitive to microscopic short-distance regularization. This structure defines an emergent kinematic energy scale that controls dissipative dynamics and provides a minimal analytic framework for studying scale anomaly, boundary-condition-induced non-Hermiticity, and quantized dissipation in relativistic open quantum systems.
We develop a unified spectral-semigroup framework that connects real-time and imaginary-time quantum dynamics through analytic continuation. Within this formulation, evolution is expressed as an exponential reweighting of spectral components generated by a single operator G, placing unitary and dissipative dynamics on equal footing within a common spectral structure. The mapping naturally induces a nonlocal fractional operator in time, giving rise to a contractive semigroup governed by a square-root spectral deformation and identifying imaginary-time evolution as an effective fractional low-pass filter. While exponential attenuation suppresses high-frequency components, the inverse transformation remains systematically controllable within a well-defined spectral window. In this regime, stable reconstruction of low-energy and coarse-grained dynamical features is achieved, establishing a predictive relation between imaginary-time evolution and recoverable information. This leads to a quantitative description of a bandwidth-resolved asymmetry between forward propagation and inverse recovery. Across systems with continuous and discrete spectra, few-level coherence, and non-Hermitian generators, we demonstrate that spectral structure governs reconstruction fidelity in a unified manner. In particular, non-Hermitian and open-system settings reveal that irreversibility emerges as a geometry- and scale-dependent feature of the spectrum, tied to both damping and eigenstate non-orthogonality. These results recast analytic continuation as a structured, scale-dependent filtering process with quantifiable and systematically accessible reconstruction limits, providing a unified perspective on the interplay between dynamics, spectral geometry, and information recovery.
We introduce the Dirac Inverted Oscillator, a new exactly solvable relativistic quantum system obtained through a Hermitian modification of the generalized momentum operator in the Dirac equation. In contrast to the conventional Dirac oscillator, where the generalized momentum is intrinsically non-Hermitian while the Hamiltonian remains Hermitian, the present construction reverses these Hermiticity properties: the generalized momentum becomes Hermitian, whereas the corresponding Dirac Hamiltonian is intrinsically non-Hermitian. This inversion leads to a new class of relativistic Hamiltonians within the framework of non-Hermitian quantum mechanics. Starting from the stationary Dirac equation, we derive the corresponding second-order wave equation and establish the generalized symmetry properties of the model, including pseudo-Hermiticity and pseudo- symmetry. We then prove that the Dirac Inverted Oscillator is exactly related to the conventional Dirac oscillator through a Hermitian but non-unitary similarity transformation generated by a dilation operator. This transformation is bijective and invertible, mapping the original non-Hermitian relativistic problem onto an equivalent Hermitian Schrodinger eigenvalue problem while preserving its complete spectral structure. The transformed Hermitian problem is solved analytically, allowing the exact relativistic spectrum and the corresponding eigenfunctions of the original non-Hermitian Hamiltonian to be determined explicitly. The present work therefore establishes an exact correspondence between a non-Hermitian relativistic Dirac system and a Hermitian Schrodinger problem, providing a new exactly solvable model and illustrating the effectiveness of Hermitian non-unitary similarity transformations for constructing analytically solvable relativistic Hamiltonians beyond the conventional Hermitian framework.
Discrete scale invariance often arises from resonant few-body or singular scale-invariant dynamics. We show that it can instead emerge in the internal motion of a composite excitation in an ordered quantum magnet. In the marginal 1/r4 transverse-field Ising chain, long-range bonds generate an asymptotic inverse-square attraction between dressed domain walls, with strength fixed by the spontaneous magnetization. The dressed two-kink threshold curvature sets the relative kinetic scale. Together, these independently accessible quantities determine the scale-anomaly exponent and hence the meson hierarchy. In the supercritical regime, the same exponent governs geometric binding-energy and size ratios, logarithmic level accumulation, and log-periodic threshold scattering. Full-spin exact diagonalization and a fourth-order weak-field Hamiltonian support the coupled energy--size scaling in the finite window between core and ring effects. This provides a microscopic many-body realization of quantum limit-cycle physics, with its universal scaling fixed by magnetic order and kink mobility.
Overview In the centennial year of the Schrödinger Equation (1926–2026), this work introduces a novel conceptual framework where quantum dynamics emerges from the intrinsic topological properties of a discrete, non-orientable space-time lattice. The core of the model is the "Möbius Pixel": a fundamental 0D/0+1D quantum unit defined on a non-orientable manifold. By employing the formalism of Pseudo-Hermitian Quantum Mechanics, we demonstrate how the antilinear symmetries inherent in surfaces like the Möbius strip and the Klein bottle naturally generate real energy spectra and complex dynamical structures. Key Scientific Contributions Emergent Dynamics: Derivation of a modified Schrödinger equation from a discrete pixel lattice (pi, pi*), featuring emergent Dirac and Majorana-type coupling terms. Topological Foundation: A rigorous link between non-orientable geometry and the Nambu-like doubled representation of quantum states. Pseudo-Hermiticity: Use of the metric operator η and the involutory operator C to ensure spectral stability and positive-definite inner products in the presence of torsional couplings. Unified Vision: A "symphonic" perspective where fundamental interactions and mass are interpreted as rotovibrational resonances and topological inertia of the lattice. Technical Abstract We construct a toy-model framework in which quantum dynamics emerges from the topological structure of non-orientable surfaces. Using a discrete pixel lattice, we derive a pseudo-Hermitian Hamiltonian whose continuum limit reproduces a Schrödinger equation with additional Dirac and Majorana-type terms. The reality of the spectrum is guaranteed by the pseudo-Hermiticity condition. In this framework, the observable wavefunction emerges as an energy-resolved sector of a higher-dimensional pseudo-Hermitian system. Technical Focus: Pseudo-Hermitian Stability and Lagrangian Spectrum This framework is centered on the formalization of a stable, real-valued spectrum for non-orientable pixel dynamics. The core mathematical challenge addressed is the preservation of a positive-definite inner product in the presence of torsional (antilinear) terms. 1. The Metric Operator η and Involutory C To ensure spectral stability, we define the Hamiltonian H as pseudo-Hermitian with respect to the metric operator η: H† = η H η⁻¹ We introduce a linear, involutory operator C (C² = I) that commutes with the Hamiltonian [H, C] = 0. This operator C is essential for constructing a strictly positive-definite inner product: ⟨ψ | φ⟩_C = ⟨ψ | η C | φ⟩ This construction guarantees that the "Möbius Pixel" states reside in a physical Hilbert space with a consistent probabilistic interpretation, neutralizing the instabilities typically associated with non-Hermitian torsional couplings. 2. Lagrangian Extension and Hamiltonian H The internal dynamics is derived from a 0+1D Lagrangian density accounting for vibrational (n) and topological (k) degrees of freedom. The extension to the full Hamiltonian H includes: Mass-topological Term: m_top c² Internal Excitation Spectrum: Defined by the functional f(n,k), representing the energy levels of the discrete pixel. Torsional Coupling: An antilinear term λ₄ Φ T inducing mixing between the pi and pi* sectors. The resulting spectrum E_n,k remains real under the stability condition: (m_top c² + λ₃ f(n,k))² ≥ (λ₄ Φ_k)² This inequality provides a natural threshold for the lattice, where Planck-scale incompressibility acts as a physical cut-off. Call for Formalization and Collaboration I have established the foundational structure for η and C within the context of the C-formalization. I am looking for collaborators (Theoretical Physicists, Mathematicians) to: Generalize the C operator for an N-pixel lattice interaction. Refine the Lagrangian to include full Lorentz invariance in the continuum limit. Analyze Torsional Modes as symmetry-protected sectors in a 4D pseudo-Hermitian field theory.
This work develops a phase-based formulation of relativistic wave dynamics, demonstrating that the Klein--Gordon equation emerges naturally from the foundational assumption of intrinsic phase periodicity in material fields. Mapping the phase directly onto the classical action, we postulate that localized excitations possess an invariant rest-frame oscillation governed by a proper frequency ω0. This physical condition establishes an operational mass-frequency relation, m=ℏω0/c2, without requiring rest energy as an independent, axiomatic input. We show that the Klein--Gordon equation arises as the minimal local, linear, Lorentz-invariant field equation compatible with this internal phase structure. Within this framework, mass acts as an intrinsic frequency scale governing wave propagation, and relativistic kinematics is fully recovered as a structural consequence of phase coherence. This approach provides a unified wave-mechanical interpretation where particle dynamics maps onto the group velocity of dispersive wave packets, offering an intuitive account of free propagation, dispersion, and tunneling across potential barriers.
We develop a systematic framework for the quantum and thermal properties of a Klein-Gordon scalar field subject to an inverted harmonic potential −21m2ω2x2. Starting from a non-Hermitian momentum substitution P→P−mωx, we employ a symplectic phase-space rotation V=exp[−8π(xp+px)] to map the system onto an analytically tractable effective harmonic oscillator evaluated at xeiπ/4. This allows us to define a well-regulated partition function Z(β,ω,m) and derive closed-form expressions for the free energy, entropy, and thermal correlation functions. We then apply this framework to three physical settings: (i) scalar field fluctuations during cosmological inflation, (ii) quantum fields near black-hole horizons, and (iii) order-parameter dynamics near second-order phase transitions in condensed matter. Our results unify previously scattered results in the literature and provide new predictions for the finite-temperature spectral density and entanglement entropy of unstable quantum systems.