Henry Stapp
Encyclopedia
Henry Stapp is an American physicist, well-known for his work in quantum mechanics
Quantum mechanics
Quantum mechanics, also known as quantum physics or quantum theory, is a branch of physics providing a mathematical description of much of the dual particle-like and wave-like behavior and interactions of energy and matter. It departs from classical mechanics primarily at the atomic and subatomic...

.

Biography

Stapp received his PhD in particle physics
Particle physics
Particle physics is a branch of physics that studies the existence and interactions of particles that are the constituents of what is usually referred to as matter or radiation. In current understanding, particles are excitations of quantum fields and interact following their dynamics...

 at the University of California, Berkeley
University of California, Berkeley
The University of California, Berkeley , is a teaching and research university established in 1868 and located in Berkeley, California, USA...

, under the supervision of Nobel Laureates Emilio Segrè and Owen Chamberlain
Owen Chamberlain
Owen Chamberlain was an American physicist, and Nobel laureate in physics for his discovery, with collaborator Emilio Segrè, of antiprotons, a sub-atomic antiparticle.-Biography:...

. While there, he was a member of the Berkeley Fundamental Fysiks Group
Fundamental Fysiks Group
The Fundamental Fysiks Group was founded in San Francisco in May 1975 by two physicists, Elizabeth Rauscher and George Weissmann, at the time both graduate students at the University of California, Berkeley. The group held informal discussions on Friday afternoons to explore the philosophical...

, founded in May 1975 by Elizabeth Rauscher
Elizabeth Rauscher
Elizabeth A. Rauscher is an American physicist and parapsychologist. She is a former researcher with the Lawrence Berkeley National Laboratory, Lawrence Livermore National Laboratory, the Stanford Research Institute, and NASA....

 and George Weissmann, which met weekly to discuss philosophy and quantum physics.

Stapp moved to ETH Zurich
ETH Zurich
The Swiss Federal Institute of Technology Zurich or ETH Zürich is an engineering, science, technology, mathematics and management university in the City of Zurich, Switzerland....

 to do post-doctoral work under Wolfgang Pauli
Wolfgang Pauli
Wolfgang Ernst Pauli was an Austrian theoretical physicist and one of the pioneers of quantum physics. In 1945, after being nominated by Albert Einstein, he received the Nobel Prize in Physics for his "decisive contribution through his discovery of a new law of Nature, the exclusion principle or...

. During this period he composed an article called 'Mind, Matter and Quantum Mechanics', which he never sent for publication, but would become the title of his 1993 book. When Pauli died in 1958, Stapp transferred to Munich, now in the company of Werner Heisenberg
Werner Heisenberg
Werner Karl Heisenberg was a German theoretical physicist who made foundational contributions to quantum mechanics and is best known for asserting the uncertainty principle of quantum theory...

. While making important contributions to, among other topics, the analysis of proton-proton scattering and the development of analytic S-matrix theory, Stapp is perhaps most well known for his ongoing work in the foundations of quantum mechanics, with particular focus on explicating the role and nature of consciousness
Consciousness
Consciousness is a term that refers to the relationship between the mind and the world with which it interacts. It has been defined as: subjectivity, awareness, the ability to experience or to feel, wakefulness, having a sense of selfhood, and the executive control system of the mind...

. He is also an expert on Bell's Theorem
Bell's theorem
In theoretical physics, Bell's theorem is a no-go theorem, loosely stating that:The theorem has great importance for physics and the philosophy of science, as it implies that quantum physics must necessarily violate either the principle of locality or counterfactual definiteness...

, having solved problems related to non-locality presented by John Bell
John Stewart Bell
John Stewart Bell FRS was a British physicist from Northern Ireland , and the originator of Bell's theorem, a significant theorem in quantum physics regarding hidden variable theories.- Early life and work :...

 and Albert Einstein
Albert Einstein
Albert Einstein was a German-born theoretical physicist who developed the theory of general relativity, effecting a revolution in physics. For this achievement, Einstein is often regarded as the father of modern physics and one of the most prolific intellects in human history...

.

He currently performs his research at the Lawrence Berkeley National Laboratory
Lawrence Berkeley National Laboratory
The Lawrence Berkeley National Laboratory , is a U.S. Department of Energy national laboratory conducting unclassified scientific research. It is located on the grounds of the University of California, Berkeley, in the Berkeley Hills above the central campus...

.

Consciousness

Some of Stapp's work concerns the implications of quantum mechanics for consciousness.

Stapp is one of those who favours the idea that quantum waves collapse only when they interact with consciousness. He argues that quantum waves collapse when intelligent brains select one among the alternative quantum possibilities as a basis for future action.
His theory of how mind may interact with matter via quantum
Quantum
In physics, a quantum is the minimum amount of any physical entity involved in an interaction. Behind this, one finds the fundamental notion that a physical property may be "quantized," referred to as "the hypothesis of quantization". This means that the magnitude can take on only certain discrete...

 processes in the brain differs from that of Penrose
Roger Penrose
Sir Roger Penrose OM FRS is an English mathematical physicist and Emeritus Rouse Ball Professor of Mathematics at the Mathematical Institute, University of Oxford and Emeritus Fellow of Wadham College...

 and Hameroff. While the latter postulates quantum computing in the microtubules in brain neurons, Stapp postulates more global collapse via his 'mind like' wave-function collapse that exploits certain aspects of the quantum Zeno effect
Quantum Zeno effect
The quantum Zeno effect is a name coined by George Sudarshan and Baidyanath Misra of the University of Texas in 1977 in their analysis of the situation in which an unstable particle, if observed continuously, will never decay. One can nearly "freeze" the evolution of the system by measuring it...

 within the synapses to explain attention
Attention
Attention is the cognitive process of paying attention to one aspect of the environment while ignoring others. Attention is one of the most intensely studied topics within psychology and cognitive neuroscience....

.
His views are spelled out most clearly in his book, Mindful Universe: Quantum Mechanics and the Participating Observer

Analysis

The known laws of quantum theory, taken as including wave function collapse, are indeterministic
Quantum indeterminacy
Quantum indeterminacy is the apparent necessary incompleteness in the description of a physical system, that has become one of the characteristics of the standard description of quantum physics...

; they do not completely specify either the actions we take or the outcomes we experience in terms of the prior mathematical state of the universe, and the choice of action is not fixed even statistically. Thus, according to at least one orthodox contemporary theory, the universe of which we are part evolves, insofar as contemporary science can say, in a way that need not be determined exclusively by the matter
Matter
Matter is a general term for the substance of which all physical objects consist. Typically, matter includes atoms and other particles which have mass. A common way of defining matter is as anything that has mass and occupies volume...

-like aspects of nature (although the existence of immaterial determining factors remains speculative). A corollary of this view of reality is that the history of the universe need not be a fixed 4 dimensional structure, as nineteenth century physics proclaimed, but is constantly forging ahead into the future
Growing block universe
According to the Growing Block Universe or The Growing Block View theory of time, the past and present exist and the future does not exist. The present is an objective property, to be compared with a moving spotlight. By the passage of time more of the world comes into being, therefore the block...

, in keeping with common sense. According to Stapp, each increase in human knowledge is associated with a wave function collapse, which is an 'act of creation' that is a step along the arrow of time
Arrow of time
The arrow of time, or time’s arrow, is a term coined in 1927 by the British astronomer Arthur Eddington to describe the "one-way direction" or "asymmetry" of time...

. Thus, free will
Free will
"To make my own decisions whether I am successful or not due to uncontrollable forces" -Troy MorrisonA pragmatic definition of free willFree will is the ability of agents to make choices free from certain kinds of constraints. The existence of free will and its exact nature and definition have long...

could be seen as directly instrumental in the evolution of the universe.

External links

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