21Sep 2022 by Nigel Fleming No Comments
linkedin post 2021-05-20 03:35:42

linkedin post 2021-05-20 03:35:42

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GENERALIZABLE. “These systems can be described as quantum fields or neural networks. This striking similarity suggest that there exists an underlying universality in enhancement of information storage capacity that extends across the disciplines. All the phenomena have counterparts in the classical limit, with the role of quantum scrambling taken up by a classical chaos.” https://www.d-itp.nl/shared-content/events/events/scientific/00/2018-okt-18-georgi-dvali-iop-colloquium.html?cb View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments
linkedin post 2021-05-20 03:34:21

linkedin post 2021-05-20 03:34:21

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SLOW DECAY. “It has also been conjectured that information becomes highly scrambled. We show that all the above properties are shared  by other well-defined systems with enhanced memory storage capacity that seemingly have nothing to do with black holes.” https://www.d-itp.nl/shared-content/events/events/scientific/00/2018-okt-18-georgi-dvali-iop-colloquium.html?cb View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments
linkedin post 2021-05-20 03:32:58

linkedin post 2021-05-20 03:32:58

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STRANGE DECAY. “Black holes are known to saturate the bound on information storage capacity. This is quantified by their micro-state entropy that is holographic by its nature as it obeys the area law. It is also known that black holes decay in a strange way:  Slowly releasing energy but no information for a very long time.” https://www.d-itp.nl/shared-content/events/events/scientific/00/2018-okt-18-georgi-dvali-iop-colloquium.html?cb View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments

linkedin post 2021-05-23 04:53:53

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PREQUANTUM TIME. “Rather, one has to confront the extremely difficult problem of solving a collection of very non-linear, coupled (elliptic) partial-differential equations. So far, this has proved intractable. This, then, is the first form of the problem of time: the problem of finding a time ‘before quantisation’.” https://lnkd.in/dMm_YkR View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments

linkedin post 2021-05-22 05:18:21

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GRAVITY IS THE PROBLEM. “Many of the conceptual issues surrounding the emergence of time, or the problem of time, are much the same, whether or not one considers matter. For example, as Kuchar (this volume) says, “matter is not the heart of the problem [of time in geometrodynamics]; it is gravity”. https://lnkd.in/dMm_YkR View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments

linkedin post 2021-05-23 04:50:18

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THE PROBLEM OF TIME. “The canonical quantisation of general relativity leads to a quantum state-vector which is a functional of 3-geometries; (this subject is known as ‘quantum geometrodynamics’). But there are immense mathematical and conceptual difficulties about this quantisation. Prominent among the conceptual difficulties is what is what is perhaps the best-known philosophical topic arising from quantum gravity: the so-called ‘problem of time’.” https://lnkd.in/dMm_YkR View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments

linkedin post 2021-05-23 04:47:34

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OTHERNESS. “The Copenhagen interpretation is one that requires, not an observer, but a ‘classical background’ external to the system. And, arguably, one obvious candidate for such a background is the continuous spacetime manifold of our usual quantum theories (both quantum mechanics and quantum field theories). But we admit to giving this sort of interpretation little credence.” https://lnkd.in/dMm_YkR View in LinkedIn
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21Sep 2022 by Nigel Fleming No Comments

linkedin post 2021-05-23 04:46:00

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THE OBSERVER REQUIREMENT. “The endeavour of quantum gravity is closely related to quantum cosmology, i.e., the attempt to have a quantum theory of the whole universe. And in quantum cosmology, the traditional Copenhagen interpretation, with its requirement of an observer external to the system, is obviously inapplicable.” https://lnkd.in/dMm_YkR View in LinkedIn
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