Traversable acausal retrograde domains in spacetime

Tippett, Benjamin K.; Tsang, David

doi:10.1088/1361-6382/aa6549

Cited by 9 publications

(16 citation statements)

References 42 publications

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“…This concept suggests that complex mental states and functions (e.g. the ability to connect _____________________________________________________________________________________ 1 TARDIS: Traversable Acausal Retrograde Domain in Space-Time (Tippett & Tsang, 2017) describing a "vehicle" or "bubble" that traverses the space-time manifold, based on the theory that rather than viewing the Universe as 3D + a 4 th dimension of Time, these dimensions must be imagined as instantaneous and concurrent (popularly depicted as a 'time machine' in sciencefiction classics such as "Doctor Who"). past, present, future events in a single coherent mental kaleidoscope) are embedded in an "imperceptible" fourth spatial dimension of brain, which can be quantified via Borsuk-Ulam Theorem (BUT) and applied to intrinsic, low frequency, spontaneous oscillatory activity (Tozzi & Peters, 2016), i.e.…”

Section: Electrophysiological Trajectories: Mathematical Multi-dimensmentioning

confidence: 99%

Mapping meditative states and stages with electrophysiology: concepts, classifications, and methods

Schoenberg

Vago

2019

Current Opinion in Psychology

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Author Declarations: None we wish to confirm. There are no known conflicts of interest associated with this publication and there has been no significant financial support for this work that could have influenced its outcome. We confirm that the manuscript has been read and approved by all named authors and that there are no other persons who satisfied the criteria for authorship but are not listed. We confirm that we have given due consideration to the protection of intellectual property associated with this work and that there are no impediments to publication, including the timing of publication, with respect to intellectual property. In so doing We confirm that we have followed the regulations of our institutions concerning intellectual property. We understand that the Corresponding Author is the sole contact for the Editorial process (including Editorial Manager and direct communications with the office). We are responsible for submissions of revisions and final approval of proofs. We confirm that we have provided a current, correct email address which is accessible by the Corresponding Author.

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Section: Electrophysiological Trajectories: Mathematical Multi-dimensmentioning

confidence: 99%

Mapping meditative states and stages with electrophysiology: concepts, classifications, and methods

Schoenberg

Vago

2019

Current Opinion in Psychology

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“…where H ∈ C k ([0, +∞); R) (k ∈ {2, 3, ..., ∞}) is an assigned shape function, such that Inspired by the "interpolation strategies" of Alcubierre [1], Krasnikov [20], Tippett-Tsang [42] and other authors, we use the function X of Eq. (2.3) to introduce on R 4 the quadratic form…”

Section: Description Of the Modelmentioning

confidence: 99%

A time machine for free fall into the past

Fermi

Pizzocchero

2018

Class. Quantum Grav.

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Inspired by some recent works of Tippett-Tsang and Mallary-Khanna-Price, we present a new spacetime model containing closed timelike curves (CTCs). This model is obtained postulating an ad hoc Lorentzian metric on R 4 , which differs from the Minkowski metric only inside a spacetime region bounded by two concentric tori. The resulting spacetime is topologically trivial, free of curvature singularities and is both time and space orientable; besides, the inner region enclosed by the smaller torus is flat and displays geodesic CTCs. Our model shares some similarities with the time machine of Ori and Soen but it has the advantage of a higher symmetry in the metric, allowing for the explicit computation of a class of geodesics. The most remarkable feature emerging from this computation is the presence of future-oriented timelike geodesics starting from a point in the outer Minkowskian region, moving to the inner spacetime region with CTCs, and then returning to the initial spatial position at an earlier time; this means that time travel to the past can be performed by free fall across our time machine. The amount of time travelled into the past is determined quantitatively; this amount can be made arbitrarily large keeping non-large the proper duration of the travel. An important drawback of the model is the violation of the classical energy conditions, a common feature of many time machines. Other problems emerge from our computations of the required (negative) energy densities and of the tidal accelerations; these are small only if the time machine is gigantic.

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“…A second reason is that several mathematical models which allow travel to an earlier time or the transmission of information to the past have been detailed in the technical literature (e.g. Morris et al 1988;Friedman et al 1990;Gott 1991;Visser 1996;Mallett 2003;Ralph & Downes 2012;Yuan et al 2015;Tippett & Tsang 2017) along with popular physics books (e.g. Thorne 1994;Gott 2001;Mallett & Henderson 2008;Kaku 2009;Clegg 2011;Al-Khalili 2016).…”

Section: Information and The Temporal Epistemic Anomalymentioning

confidence: 99%

The Temporal Epistemic Anomaly

Riggs

2018

Manuscrito

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It is not uncommon in time travel stories to find that the mechanism by which the time travel is achieved is not invented. A time traveller could journey to his/her own past and give the designs of the time travel machine to his/her earlier self as s/he was given the designs as a younger person. These designs never get thought up by anyone. Such a situation would conflict with the usual conception of the acquisition of knowledge. This situation is called the Temporal Epistemic Anomaly and would arise if knowledge is gained at a time prior to the information in question being transmitted but is not discovered or invented at any time. This article examines the implications of information propagating around a causal chain that is closed in time (which is required to create the Anomaly) and whether this information need have a specific origin point.

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Traversable acausal retrograde domains in spacetime

Cited by 9 publications

References 42 publications

Mapping meditative states and stages with electrophysiology: concepts, classifications, and methods

Mapping meditative states and stages with electrophysiology: concepts, classifications, and methods

A time machine for free fall into the past

The Temporal Epistemic Anomaly

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