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MEGASCALE THOUGHT MACHINES. “These machines, referred to as Matrioshka Brains, consume the entire power output of stars (~10(26) W), consume all of the useful construction material of a solar system (~10(26) kg), have thought capacities limited by the physics of the universe and are essentially immortal.” https://lnkd.in/gxfU_Yr View in LinkedIn

THE MODEL. “The quantum brain network that we shall construct in the present paper is nothing but a neural network implementation of the same model. This is achieved by means of identification of the neuron‐describing degrees of freedom with the number operators of the angular harmonics of the quantum field.” https://onlinelibrary.wiley.com/doi/full/10.1002/prop.201800007?casa_token=GdPRXs_tGLEAAAAA%3Ag-pxPMtkcleTYDUNK3mYGfpEzKRyc2LqQknTgFFB7dkYFDL8rDe2s0f4_0Q0oKjXD4_AEgFPGWolVTQ View in LinkedIn

SOURCE OF STORAGE. “The micro‐states of these modes house an exponentially large number of patterns, with the corresponding entropy given by the area of the same ‐dimensional sphere.” https://onlinelibrary.wiley.com/doi/full/10.1002/prop.201800007?casa_token=GdPRXs_tGLEAAAAA%3Ag-pxPMtkcleTYDUNK3mYGfpEzKRyc2LqQknTgFFB7dkYFDL8rDe2s0f4_0Q0oKjXD4_AEgFPGWolVTQ View in LinkedIn

GAPLSSNESS. “This excitation lowers the energy thresholds of the higher angular momentum modes, so that the theory delivers a set of the gapless modes with their number scaling as the area of a ‐dimensional sphere.” https://onlinelibrary.wiley.com/doi/full/10.1002/prop.201800007?casa_token=GdPRXs_tGLEAAAAA%3Ag-pxPMtkcleTYDUNK3mYGfpEzKRyc2LqQknTgFFB7dkYFDL8rDe2s0f4_0Q0oKjXD4_AEgFPGWolVTQ View in LinkedIn

INFO STORAGE. “It was shown that a theory of a quantum field inhabiting a d‐dimensional sphere and experiencing an angular‐momentum‐dependent attractive interaction exhibits a sharp enhancement of memory storage capacity in a critical state in which the lowest angular momentum mode is macroscopically excited.” https://onlinelibrary.wiley.com/doi/full/10.1002/prop.201800007?casa_token=GdPRXs_tGLEAAAAA%3Ag-pxPMtkcleTYDUNK3mYGfpEzKRyc2LqQknTgFFB7dkYFDL8rDe2s0f4_0Q0oKjXD4_AEgFPGWolVTQ View in LinkedIn

QUANTUM GRAVITY. “The discovery of a satisfactory quantum theory of gravity has been widely regarded as the Holy Grail of theoretical physics for some forty years. The senses in which our standard ideas of time, and more generally spacetime, might be not fundamental to reality, but instead ‘emergent’ as an approximately valid concept on sufficiently large scales.” https://lnkd.in/dMm_YkR View in LinkedIn

GIVEN ASSUMPTIONS. “Although a fully‐satisfactory quantum description of black holes is still missing, it is reasonably clear that they represent the states in a Hilbert space of quantized fields. We shall not question this statement.” https://onlinelibrary.wiley.com/doi/full/10.1002/prop.201800007?casa_token=GdPRXs_tGLEAAAAA%3Ag-pxPMtkcleTYDUNK3mYGfpEzKRyc2LqQknTgFFB7dkYFDL8rDe2s0f4_0Q0oKjXD4_AEgFPGWolVTQ View in LinkedIn

FRAGMENT FROM NATURE features an extraordinary article by an extraordinary man. Professor J. Butterfied was Regius Professor of Physic at the University of Cambridge where he led the re-establishment of the School of Clinical Medicine, at the University of Cambridge, and was Master of Downing College, Cambridge. I had a long meeting with this man and was stunned by his extreme gentle humility and his effortless gravitas. https://lnkd.in/dTSsKks View in LinkedIn

INEVITABLE QUESTION. “Let us first ask, what are the black holes from the quantum field theoretic point of view?” https://onlinelibrary.wiley.com/doi/full/10.1002/prop.201800007?casa_token=GdPRXs_tGLEAAAAA%3Ag-pxPMtkcleTYDUNK3mYGfpEzKRyc2LqQknTgFFB7dkYFDL8rDe2s0f4_0Q0oKjXD4_AEgFPGWolVTQ View in LinkedIn

Believe it or not, this little person came up to me in the woods. I am trying to locate its home. Mythical experience. View in LinkedIn