arXiv subjects

Hai-Long Zhao

Publications and source records attributed to Hai-Long Zhao.

4 recordsLinked to original sources

arXiv2026

Massless Neutrino Oscillations via Quantum Tunneling

In the current theory, neutrino oscillations require non-vanishing masses of the neutrinos. By analogy with the oscillation of quantum two-state system, we assume that neutrino oscillations may be regarded as quantum tunneling process. The difference of the quantum numbers between two neutrinos may be regarded as a barrier between them. Thus neutrinos with vanishing mass can also oscillate. The hypothesis can also be applied to the oscillations of charged leptons, quarks, neutral mesons, as well as electroweak mixing.

physics.gen-ph↗

arXiv2026

Locally Lorentz-Covariant Theory of Gravity Founded on Inertial Frame of Center of Mass

A locally Lorentz-covariant theory of gravity that is equivalent to general relativity in weak gravitational field is suggested. The space-time standards in local gravitational field are modified in terms of equivalence principle to keep them consistent with those of inertial frame. The static metric in our theory agrees with Schwarzschild metric to the first order approximation. According to our metric expression, black hole and singularity do not exist. The gravitational vector potential generated by a moving body is obtained by applying local Lorentz transformation to Schwarzschild metric in rectangular coordinate system. In our theory, the center of mass of the system is taken as the inertial reference frame. When observed from center of mass, the results of periastron precession and gravitational radiation of binary star system are different from those of general relativity, which are derived from the relative motion of the binary. What's more, the expansion of the universe should also be observed from the center of the universe. By assuming that the Hubble constant varies with different evolution stage of the universe, dark energy is not needed.

gr-qc↗

arXiv2024

Explanation of Superluminal Phenomena Based on Wave-Particle Duality and Proposed Optical Experiments

An explanation for superluminal phenomena based on wave-particle duality of photons is suggested. A single photon may be regarded as a wave packet, whose spatial extension is its coherence volume. As a photon propagates as a wave train in vacuum, its velocity is just the speed of light. When it tunnels through a barrier as a particle, its wave function collapses and it will travel faster than light. Superluminal motion can occur only within the coherence length and the time constrained by uncertainty principle. A massive particle cannot be superluminal during the tunneling process. So superluminality does not violate causality. As for the superluminal and negative group velocities in anomalously dispersive medium, they are merely reshaping effect of the pulse, and they will become subluminal at large distances. A couple of experiments are proposed to test the superluminal phenomena.

quant-ph↗

arXiv2020

On the Implication of Bell's Probability Distribution and Proposed Experiments of Quantum Measurement

In the derivation of Bell's inequalities, probability distribution is supposed to be a function of only hidden variable. We point out that the true implication of the probability distribution of Bell's correlation function is the distribution of the joint measurement outcomes on the two sides. So it is a function of both hidden variable and settings. In this case, Bell's inequalities fail. Our further analysis shows that Bell's locality holds neither for dependent events nor for independent events. We think that the measurements of EPR pairs are dependent events, thus violation of Bell's inequalities cannot rule out the existence of local hidden variable. In order to explain the results of EPR-type experiments, we suppose that polarization entangled photon pair can be composed of two circularly or linearly polarized photons with correlated hidden variables, and a couple of experiments of quantum measurement are proposed. The first uses delayed measurement on one photon of the EPR pair to demonstrate directly whether measurement on the other could have any non-local influence on it. Then several experiments are suggested to reveal the components of polarization entangled photon pair. The last one uses successive polarization measurements on a pair of EPR photons to show that two photons with a same quantum state will behave in the same way under the same measuring condition.

physics.gen-ph↗