
543A Model of Wavefunction Collapse in Discrete SpaceTimeInternational Journal of Theoretical Physics 45 (10): 19651979. 2006.We give a new argument supporting a gravitational role in quantum collapse. It is demonstrated that the discreteness of spacetime, which results from the proper combination of quantum theory and general relativity, may inevitably result in the dynamical collapse of thewave function. Moreover, the minimum size of discrete spacetime yields a plausible collapse criterion consistent with experiments. By assuming that the source to collapse the wave function is the inherent random motion of particl…Read more

468We investigate the validity of the field explanation of the wave function by analyzing the mass and charge density distributions of a quantum system. It is argued that a charged quantum system has effective mass and charge density distributing in space, proportional to the square of the absolute value of its wave function. This is also a consequence of protective measurement. If the wave function is a physical field, then the mass and charge density will be distributed in space simultaneously fo…Read more

424We analyze the possible implications of spacetime discreteness for the special and general relativity and quantum theory. It is argued that the existence of a minimum size of spacetime may explain the invariance of the speed of light in special relativity and Einstein’s equivalence principle in general relativity. Moreover, the discreteness of spacetime may also result in the collapse of the wave function in quantum mechanics, which may provide a possible solution to the quantum measurement prob…Read more

414We investigate the meaning of the wave function by analyzing the mass and charge density distributions of a quantum system. According to protective measurement, a charged quantum system has effective mass and charge density distributing in space, proportional to the square of the absolute value of its wave function. In a realistic interpretation, the wave function of a quantum system can be taken as a description of either a physical field or the ergodic motion of a particle. The essential diffe…Read more

413This article analyzes the implications of protective measurement for the meaning of the wave function. According to protective measurement, a charged quantum system has mass and charge density proportional to the modulus square of its wave function. It is shown that the mass and charge density is not real but effective, formed by the ergodic motion of a localized particle with the total mass and charge of the system. Moreover, it is argued that the ergodic motion is not continuous but discontinu…Read more

412It is shown that the superposed wave function of a measuring device, in each branch of which there is a definite measurement result, does not correspond to many mutually unobservable but equally real worlds, as the superposed wave function can be observed in our world by protective measurement.

364It is shown that the heuristic "derivation" of the Schrödinger equation in quantum mechanics textbooks can be turned into a real derivation by resorting to spacetime translation invariance and relativistic invariance.

321The meaning of the wave function and its evolution are investigated. First, we argue that the wave function in quantum mechanics is a description of random discontinuous motion of particles, and the modulus square of the wave function gives the probability density of the particles being in certain locations in space. Next, we show that the linear nonrelativistic evolution of the wave function of an isolated system obeys the free Schrödinger equation due to the requirements of spacetime translat…Read more

304The remarkable connections between gravity and thermodynamics seem to imply that gravity is not fundamental but emergent, and in particular, as Verlinde suggested, gravity is probably an entropic force. In this paper, we will argue that the idea of gravity as an entropic force is debatable. It is shown that there is no convincing analogy between gravity and entropic force in Verlinde’s example. Neither holographic screen nor test particle satisfies all requirements for the existence of entropic …Read more

271We investigate the implications of protective measurement for de BroglieBohm theory, mainly focusing on the interpretation of the wave function. It has been argued that the de BroglieBohm theory gives the same predictions as quantum mechanics by means of quantum equilibrium hypothesis. However, this equivalence is based on the premise that the wave function, regarded as a Ψfield, has no mass and charge density distributions. But this premise turns out to be wrong according to protective measu…Read more

253We show that the physical meaning of the wave function can be derived based on the established parts of quantum mechanics. It turns out that the wave function represents the state of random discontinuous motion of particles, and its modulus square determines the probability density of the particles appearing in certain positions in space.

227A possible quantum basis of panpsychismNeuroquantology 1 (1): 49. 2001.We show that consciousness may violate the basic quantum principle, according to which the nonorthogonal quantum states can't be distinguished. This implies that the physical world is not causally closed without consciousness, and consciousness is a fundamental property of matter.

219A quantum theory of consciousnessMinds and Machines 18 (1): 3952. 2008.The relationship between quantum collapse and consciousness is reconsidered under the assumption that quantum collapse is an objective dynamical process. We argue that the conscious observer can have a distinct role from the physical measuring device during the process of quantum collapse owing to the intrinsic nature of consciousness; the conscious observer can know whether he is in a definite state or a quantum superposition of definite states, while the physical measuring device cannot “know”…Read more

112In quantum mechanics, the wave function of a Nbody system is a mathematical function defined in a 3Ndimensional configuration space. We argue that wave function realism implies particle ontology when assuming: (1) the wave function of a Nbody system describes N physical entities; (2) each triple of the 3N coordinates of a point in configuration space that relates to one physical entity represents a point in ordinary threedimensional space. Moreover, the motion of particles is random and disc…Read more

109Based on an analysis of protective measurements, we show that the quantum state represents the physical state of a single quantum system. This result is more definite than the PBR theorem [Pusey, Barrett, and Rudolph, Nature Phys. 8, 475 (2012)].

94Quantum collapse, consciousness and superluminal communicationFoundations Of Physics Letters 17 (2): 167182. 2004.The relation between quantum collapse, consciousness and superluminal communication is analyzed. As we know, quantum collapse, if exists, can result in the appearance of quantum nonlocality, and requires the existence of a pre ferred Lorentz frame. This may permit the realization of quantum superluminal communication (QSC), which will no longer result in the usual causal loop in case of the existence of a preferred Lorentz frame. The possibility of the existence of QSC is further analyzed under…Read more

79A possible connection between selfconsciousness and quantumAxiomathes 14 (4): 295305. 2004.We study the possible connection between selfconsciousness and quantum process. It is shown that the selfconsciousness function can help to measure the collapse time of wave function under some condition, while the usual physical device without selfconsciousness can't. Furthermore, we show that the observer with selfconsciousness can distinguish the definite state and the superposition of definite states under some stronger condition. This provides a practical physical method to differentiat…Read more

78It is shown that Uffink's attempt to protect the interpretation of the wave function against protective measurements fails due to several errors in his arguments

67We present a theory of discontinuous motion of particles in continuous spacetime. We show that the simplest nonrelativistic evolution equation of such motion is just the Schroedinger equation in quantum mechanics. This strongly implies what quantum mechanics describes is discontinuous motion of particles. Considering the fact that spacetime may be essentially discrete when considering gravity, we further present a theory of discontinuous motion of particles in discrete spacetime. We show that…Read more

62It has been argued that the existence of a minimum observable interval of space and time is a modelindependent result of the combination of quantum field theory and general relativity. In this paper, I promote this result to a fundamental postulate, called the MOIST postulate. It is argued that the postulate leads to the existence of a maximum signal speed and its invariance. This new result may have two interesting implications. On the one hand, it suggests that the MOIST postulate can explain…Read more

60A possible quantum basis of panpsychismCogprints. 2001.We show that consciousness may violate the basic quantum principle, according to which the nonorthogonal quantum states can't be distinguished. This implies that the physical world is not causally closed without consciousness, and consciousness is a fundamental property of matter, thus provides a possible quantum basis for panpsychism.

56Protective measurement is a new measuring method introduced by Aharonov, Anandan and Vaidman. By a protective measurement, one can measure the expectation value of an observable on a single quantum system, even if the system is initially not in an eigenstate of the measured observable. This remarkable feature of protective measurements was challenged by Uffink. He argued that only observables that commute with the system's Hamiltonian can be protectively measured, and a protective measurement of…Read more

55Lewis et al. recently demonstrated that additional assumptions such as preparation independence are always necessary to rule out a psiepistemic model, in which the quantum state is not uniquely determined by the underlying physical state. Here we point out that these authors ignored the important work of Aharonov, Anandan and Vaidman on protective measurements, and their conclusion, which is based only on an analysis of conventional projective measurements, is not true.

50We show that the motion of particles may be essentially discontinuous and random.

48It is argued that the components of the superposed wave function of a measuring device, each of which represents a definite measurement result, do not correspond to many worlds, one of which is our world, because all components of the wave function can be measured in our world by a serious of protective measurements, and they all exist in this world.

42It is argued that the existence of a minimum interval of space and time may imply the existence of gravity as a geometric property of spacetime described by general relativity.

39It has been realized that in order to solve the measurement problem, the physical state representing the measurement result is required to be also the physical state on which the mental state of an observer supervenes. This introduces an additional restriction on the solutions to the measurement problem. In this paper, I give a new formulation of the measurement problem which lays more stress on psychophysical connection, and analyze whether Everett's theory, Bohm's theory and dynamical collapse…Read more

35This thesis is an attempt to reconstruct the conceptual foundations of quantum mechanics. First, we argue that the wave function in quantum mechanics is a description of random discontinuous motion of particles, and the modulus square of the wave function gives the probability density of the particles being in certain locations in space. Next, we show that the linear nonrelativistic evolution of the wave function of an isolated system obeys the free Schrödinger equation due to the requirements …Read more

34We suggest a new answer to this intriguing question and argue that the answer may have implications for the solutions to the measurement problem. The main basis of our analysis is the doctrine of psychophysical supervenience. First of all, based on this doctrine, we argue that an observer in a quantum superposition or a quantum observer has a definite conscious experience, which is neither disjunctive nor illusive. The inconsistency of this result with the bare theory is further analyzed, and it…Read more

33The ontological model framework provides a rigorous approach to address the question of whether the quantum state is ontic or epistemic. When considering only conventional projective measurements, auxiliary assumptions are always needed to prove the reality of the quantum state in the framework. For example, the PuseyBarrettRudolph theorem is based on an additional preparation independence assumption. In this paper, we give a new proof of psiontology in terms of protective measurements in the…Read more
Shanxi University

Shanxi UniversityResearch Center For Philosophy Of Science And TechnologyProfessor
Areas of Interest
Philosophy of Mind 