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Main positions:Director, High Performance Computing Platform, PKU
Degree:Doctoral degree
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School/Department:Institute of Theoretical Physics

Lei Yian

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Education Level: Postgraduate (Doctoral)

Administrative Position: Associate Professor

Alma Mater: Peking University

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Pairing and Resonance: The Holistic Nature of the Atom
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Introduction: The Forgotten Holism

When discussing atomic structure, modern physics textbooks invariably rush to invoke wave functions, probability clouds, and quantum jumps—as if atomic stability were unintelligible without these “quantum” constructs. Yet this eagerness to “quantize” may precisely obscure a deeper, more elegant physical picture: the atom as a classical, self-organized resonant system exhibiting intrinsic holism.

Electron pairing and orbital resonance—two phenomena often treated as distinct—actually reveal a single fundamental truth: the atom is not a mechanical assembly of discrete particles, but an indivisible, dynamic whole. This holism does not require mysterious quantum interpretations; it can be fully understood within the framework of classical physics—provided we are willing to transcend reductionist thinking.

I. The Universality and Profundity of Pairing

Nature’s Preference for Pairing
Observing nature reveals a striking pattern: pairing occurs ubiquitously across scales—from subatomic particles to cosmic structures. Electrons in atoms favor spin-antiparallel pairing; electrons in superconductors form Cooper pairs; even protons and neutrons in nuclei exhibit pairing tendencies. This universality suggests that pairing is not accidental, but the inevitable outcome of energy optimization.

Most telling is the chemical inertness of noble gases. Helium, neon, argon, and their kin are “inert” precisely because all their electrons are paired. These paired electrons reside in a “frozen” state—their energy is locked and cannot be easily altered. This “freezing” is not stasis, but the extreme limit of dynamic equilibrium.

Imagine two perfectly synchronized pendulum clocks swinging in precise antiphase: energy continuously exchanges between them, yet the total remains constant. Any attempt to perturb the frequency of one is immediately resisted by the coupling. Electron pairing is precisely such a phase-locked resonant state.

The Holistic Nature of Pairing
Traditional quantum mechanics describes electron pairing as an “entangled state” of two particles, imbuing it with an aura of mystery. But viewed holistically, a more natural picture emerges: pairing is not a combination of two electrons, but a collective excitation mode of the entire system.

Consider a standing wave on water. We do not say it is “composed of two counter-propagating waves”—the standing wave is the wave, a vibrational mode of the water surface as a whole. Likewise, paired electrons are not “two entangled particles,” but a collective condensate of the electron field.

This holistic view explains the apparent “nonlocal” correlation of paired electrons: measuring the spin of one instantly determines the other’s as opposite. No “spooky action at a distance” is needed—because they are two aspects of a single whole, like the two sides of a coin. Observing one side necessarily implies the other; no information is transmitted, only the intrinsic unity of the system is revealed.

II. Orbital Resonance: From Celestial Mechanics to Atomic Structure

Orbital resonance—a well-documented phenomenon in celestial mechanics—arises naturally in complex many-body gravitational systems, despite the analytical intractability of the classical N-body problem. Planetary moons, asteroid belts, and exoplanetary systems all exhibit stable resonant configurations.

Compared to such astrophysical systems, the atom is a far more perfect resonator. The nucleus creates a central potential well in which electrons move. Crucially, unlike planets, electrons are identical particles—indistinguishable in mass, charge, and spin. This perfect uniformity, combined with the strength of electromagnetic interactions (10³⁶ times stronger than gravity), enables atomic resonance of unprecedented coherence.

Each electron’s motion is phase-locked to all others, forming a complex, global resonance network. This network is not a static geometric arrangement but a “breathing” dynamical system. The electron density distribution—traditionally interpreted in quantum mechanics as a “probability cloud”—is in fact the time-averaged image of this resonant dynamics.

The spherical symmetry of s-orbitals, the dumbbell shape of p-orbitals, and the intricate petal patterns of d-orbitals are not mysterious “quantum shapes.” They are natural vibrational modes of a three-dimensional resonant cavity. Just as a violin string vibrates only at specific frequencies (fundamental and harmonics), electrons in atoms resonate only in discrete, stable modes—giving rise to quantized energy levels.

III. Physical Mechanisms of Holism

Collectivization of Energy
In conventional atomic models, we say “an electron transitions from n=2 to n=1.” This phrasing obscures the true physics. In reality, energy is not a property of individual electrons but of the entire system.

When an atom absorbs or emits a photon, no single electron “jumps.” Instead, the entire resonant mode switches—much like a drumhead transitioning from one vibrational pattern to another. All electrons participate simultaneously, and energy is instantaneously redistributed across the system.

This collectivity explains the extraordinary precision of atomic spectra. If transitions involved individual electrons, environmental noise would cause significant spectral broadening. But because the excitation is collective, local perturbations are averaged out; only sufficiently strong disturbances can alter the global mode.

Global Symmetry Constraints
The Pauli exclusion principle is often portrayed as a mysterious “quantum rule”: no two electrons can occupy the same quantum state. From a resonance perspective, however, this is simply a geometric constraint.

On a drumhead, two identical wave antinodes cannot occupy the same location—this would lead to infinite amplitude and instability. Similarly, in the atom’s resonant system, two electrons cannot share identical motion modes without destabilizing the resonance. The system self-organizes into the configuration of lowest energy and highest symmetry.

Angular momentum conservation provides another global constraint. The total angular momentum of all electrons must balance collectively. When one electron changes its angular momentum, others must compensate accordingly. This rigid coupling makes the atom behave like a single rotating gyroscope—not a loose collection of particles.

IV. Classical Origins of “Quantum” Phenomena

Quantization as Resonant Selection
Energy quantization—electrons occupying only discrete energy levels—is often cited as evidence for the necessity of quantum theory. But does quantization truly require abandoning classical physics?

Consider a pipe organ: tubes of specific lengths produce specific pitches. Each tube supports only certain resonant frequencies. Is this “quantization”? No—it is the natural selectivity of resonance. Only frequencies that form standing waves within the boundary conditions can persist.

Atoms behave analogously. The geometry of the nuclear potential well and inter-electron interactions determine which vibrational modes can stably exist. The Schrödinger equation, rather than describing “matter waves,” may be best understood as a mathematical tool for computing the eigenmodes of this resonant system.

Quantum Jumps as Mode Switching
When an atom absorbs or emits a photon, the traditional narrative describes an “electron jumping between energy levels,” implying a discontinuous, enigmatic process. From the resonance perspective, this is simply a switch between stable vibrational modes.

Strum a guitar string, and it may shift from its fundamental mode to a harmonic. Though the transition appears abrupt, it is a natural consequence of nonlinear dynamics. When an external perturbation (a photon) matches the energy difference between two modes, resonant absorption occurs, and the system switches modes.

Wave–Particle Duality as Interaction-Dependent Manifestation
Wave–particle duality has long been the most perplexing aspect of quantum mechanics. But if electrons are collective excitations of a resonant system, duality becomes intuitive.

Within the atom, electrons behave as waves because they are engaged in collective oscillatory motion. But when we “measure” an electron, we strongly interact with the resonant system. This interaction disrupts the existing mode and forces the system to localize into a new configuration—what we observe as a “particle.”

This is analogous to water waves encountering a barrier: far from the obstacle, the wave nature dominates; at the point of impact, energy localizes, producing a particle-like effect. Wave–particle duality is not a quantum mystery, but a universal feature of wave systems interacting with their environment.

V. Chemical Bonding and Molecules: Extension of the Resonant Network

The Resonant Essence of Covalent Bonds
When two atoms approach to form a molecule, the conventional description invokes “electron cloud overlap” or “electron sharing.” A more accurate picture is that the resonant cavities of the two atoms couple, forming a larger, unified resonant system.

The hydrogen molecule (H₂) offers the simplest illustration. Each hydrogen atom has one unpaired electron. As they approach, these electrons do not merely “pair up”; instead, they form new resonant modes within the double-well potential created by the two nuclei. The bonding orbital corresponds to a symmetric mode (lower energy), while the antibonding orbital corresponds to an antisymmetric mode (higher energy).

Benzene provides an even more striking example. Its six carbon atoms form a ring-shaped resonant cavity, within which π-electrons establish a circular standing wave. This fully delocalized resonance imparts exceptional stability—traditionally called “aromaticity,” but more accurately understood as resonance stabilization.

Molecular Geometry as Resonant Optimization
Why is water bent while carbon dioxide is linear? Standard explanations invoke “hybrid orbitals” or “VSEPR theory.” From the resonance viewpoint, molecular geometry is simply the configuration that minimizes energy through optimal resonance.

In water, the oxygen atom’s two lone pairs and two bonding pairs form a tetrahedral resonant network, naturally yielding a bond angle of 104.5°. In CO₂, the linear arrangement maximizes symmetry and minimizes energy in the resonant system formed by carbon and two oxygen atoms.

VI. A New Understanding of Macroscopic Quantum Phenomena

Superconductivity: Macroscopic Manifestation of Pairing
Superconductivity has long been hailed as a triumph of quantum mechanics—electrons form Cooper pairs and condense into a macroscopic quantum state. But if pairing itself arises from classical resonance, superconductivity acquires a new interpretation.

In superconductors, lattice vibrations (phonons) mediate an effective attraction between electrons. This coupling locks all conduction electrons into a vast, coherent resonance network. The disappearance of resistance is not due to mystical “quantum coherence,” but because in this perfect resonant system, there is no mechanism for energy dissipation—any local disturbance is instantly smoothed by the global resonance.

Bose–Einstein Condensation: Ultimate Collective Resonance
When an atomic gas is cooled near absolute zero, it undergoes Bose–Einstein condensation—all atoms “condense” into the same quantum state. Conventionally, this is attributed to “quantum statistics.”

From the resonance perspective, however, this is the natural outcome when thermal motion is suppressed and weak interatomic couplings dominate. At ultralow temperatures, random thermal motion nearly ceases, allowing even weak interactions to establish global phase locking. All atoms behave like a single orchestra playing one note.

VII. Rethinking the Foundations of Physics

Quantum Mechanics: Instrumental vs. Ontological
This resonance-based, holistic understanding does not deny the computational efficacy of quantum mechanics. The Schrödinger equation, matrix mechanics, and path integrals remain powerful tools. But we must distinguish between instrumental utility and ontological description.

The mathematical formalism of quantum mechanics may simply be the most efficient way to describe complex resonant systems. The wave function is not a mysterious “probability wave,” but the amplitude distribution of a resonant mode; operators are not abstract entities, but descriptors of system symmetries; measurement is not “collapse,” but a switch between resonant configurations.

Revival and Extension of Classical Physics
This perspective calls for a revival—not of 19th-century mechanistic physics, but of a new classical physics that embraces holism and nonlinearity. Such a physics would:

  • Transcend reductionism and embrace emergence and self-organization;

  • Recognize resonance and synchronization as fundamental organizing principles of nature;

  • Understand “quantum” phenomena as manifestations of classical systems under specific conditions;

  • Unify microscopic and macroscopic realms, eliminating artificial scale divisions.

Convergence of Eastern and Western Thought
Intriguingly, this holistic physical picture resonates with Eastern philosophical traditions. The Taoist concept of Taiji (Supreme Ultimate), the Buddhist doctrine of Pratītyasamutpāda (dependent origination), and the Hindu notion of Brahman-Atman unity—all emphasize wholeness, interdependence, and dynamic balance.

After centuries of reductionist dominance, Western science appears to be rediscovering these ancient insights—not as mysticism, but as a rigorous synthesis grounded in physical principles and mathematical formalism.

Conclusion: Beyond Quantum Mysticism

The holism of electron pairing and orbital resonance offers us an elegant, self-consistent, and intuitively satisfying picture of the atom. In this view, the atom is neither a miniature solar system of discrete particles nor an abstract construct of probability clouds, but a living resonant system—where electrons dance, energy flows, and symmetry reigns.

This understanding extends far beyond atomic physics. It suggests that all levels of nature—from subatomic to cosmic—may obey the same organizational principles: stability through resonance, energy minimization through pairing, and emergent properties through holism.

We do not need mysterious “quantum jumps,” “wave function collapse,” or “quantum entanglement” to understand the atom. These concepts may be cognitive crutches born of our failure to recognize holism. When we truly grasp the depth of resonance and pairing, the atomic world becomes not only comprehensible but profoundly beautiful—not because it is mysterious, but because it reveals the untapped depth and elegance of classical physics.

The next revolution in physics may not lie in discovering more “quantum” phenomena, but in recognizing that these phenomena have always admitted classical, holistic explanations. By relinquishing our fixation on “quantum” mystique and embracing systemic wholeness, we may uncover a more unified and harmonious physical worldview. In this new paradigm, micro and macro are no longer opposed, wave and particle are no longer contradictory, and classical and quantum are no longer divided—they are all manifestations of a single principle of holism under varying scales and conditions.

This, perhaps, is nature’s true secret.