scholarly journals Holographic complexity of subregions in the hyperscaling violating theories

2020 ◽  
Vol 35 (23) ◽  
pp. 2050191
Author(s):  
Z. Borvayeh ◽  
M. Reza Tanhayi ◽  
S. Rafibakhsh
Keyword(s):  
Space Time ◽  
Late Time ◽  
Black Brane ◽  
Time Rate ◽  
Dynamical Exponent ◽  
The Past ◽  
The Future

In this paper, we use the complexity equals action proposal and investigate holographic complexity for hyperscaling violating theories on different subregions of space-time enclosed by the null boundaries. We are interested in computing the onshell action for certain subregions of the intersection between the Wheeler DeWitt patch and the past, as well as, the future interior of a two-sided black brane. More precisely, we extend the results of Ref. 1 in parts, to hyperscaling violating geometries and to find the finite onshell action, we define the proper counter terms. We show that in computing the rate of complexification the dynamical exponent plays a crucial rule, but, at the late time, rate of the complexity growth is independent of the hyperscaling parameters.

The Unchanging Universe

2020 ◽  
pp. 72-86
Author(s):  
Demetris Nicolaides
Keyword(s):  
Space Time ◽  
Sense Perception ◽  
Theory Of Relativity ◽  
The Past ◽  
The Future ◽  
Time Continuum ◽  
The Universe ◽  
Block Universe

Heraclitus declares the being (that which exists, nature) but identifies it with becoming, but Parmenides declares just the Being; only what is, is, what is not, is not. All “follows” from that: change, he argues, is logically impossible and so what is, is one and unchangeable! This dazzling absolute monism is in daring disagreement with sense perception, but curiously it has found a well-known genius as a supporter. Emboldened by his theory of relativity, Einstein considers the universe as a four-dimensional “block” (a space-time continuum like a loaf of bread) which, remarkably, contains all moments of time (of past, present, and future) always, and where change is an illusion. He said, “For we convinced physicists, the distinction between past, present, and future is only an illusion, however persistent.” In the block universe, the past is not gone, it is present; and the future, like the present, is, well, present, too.

Time will tell: Temporal landmarks influence metaphorical associations between space and time

2018 ◽  
Vol 29 (4) ◽  
pp. 677-701 ◽  
Author(s):  
Heng Li ◽  
Yu Cao
Keyword(s):  
Individual Differences ◽  
Chinese Spring ◽  
Space Time ◽  
Fresh Start ◽  
The Past ◽  
Space And Time ◽  
Mapping Experiment ◽  
Spring Festival ◽  
The Future ◽  
Temporal Focus

AbstractAccording to the Temporal Focus Hypothesis (TFH), people’s implicit spatial conceptions are shaped by their temporal focus. Whereas previous studies have demonstrated that people’s cultural or individual differences related to certain temporal focus may influence their spatializations of time, we focus on temporal landmarks as potential additional influences on people’s space-time mappings. In Experiment 1, we investigated how personally-related events influence students’ conceptions of time. The results showed that student examinees were more likely to think about time according to the past-in-front mapping, and student registrants, future-in-front mapping. Experiment 2 explored the influence of calendar markers and found that participants tested on the Chinese Spring Festival, a symbol of a fresh start, tended to conceptualize the future as in front of them, while those tested on the Tomb Sweeping Day, an opportunity to remember the ancestors, showed the reversed pattern. In Experiment 3, two scenarios representing past or future landmarks correspondingly were presented to participants. We found that past-focused/future -focused scenarios caused an increase in the rate of past-in-front/future-in-front responses respectively. Taken together, the results from these three studies suggest that people’s conceptions of time may vary according to temporal landmarks, which can be explained by the TFH.

scholarly journals Silencios y repeticiones de la violencia en Colombia. La novela histórica como ontología crítica del presente

2021 ◽  
Vol 8 (15) ◽  
pp. 62-91
Author(s):  
Jorge Enrique Blanco García
Keyword(s):  
Historical Fiction ◽  
Armed Conflict ◽  
Historical Novel ◽  
Space Time ◽  
Historical Novels ◽  
Ontological Status ◽  
The Past ◽  
Critical Ontology ◽  
The Future ◽  
Novela Historica

This paper addresses the contemporary historical novel as a practice of critical ontology of the present. That is to say, a field of reflection that investigates the current ontological status. In the Colombian case, historical fiction has been attentive to interpret the past of violence and armed conflict in an aesthetic way as a mechanism to understand the future of the present. This essay proposes that historical novels, despite being located in a space-time already travelled, maintain a matrix of meaning anchored in the present reality's interpellation. To this end, this paper analyzes the novels The Crime of the Century (2006) by Miguel Torres and So much blood seen (2007) by Rafael Baena.

Historical Ontology

2018 ◽  
pp. 11-16
Author(s):  
Thomas Nail
Keyword(s):  
Space Time ◽  
Vantage Point ◽  
Minimal Condition ◽  
Historical Ontology ◽  
The Past ◽  
The Future ◽  
Historical Methodology ◽  
The Absolute ◽  
Contemporary Reality

This chapter lays out the historical methodology of the book. The primary inquiry of this book is ontological, but not foundational. It is historical. In other words, it does not aim to identify the absolute and immutable structure of being forever and all time (being qua being). The contribution of Being and Motion is to locate a new historical ontology of motion—a minimal condition that, from the perspective of the present, appears to have always been a hidden dimension of the past. The aim is therefore to take one the most important (not the only or essential) features of contemporary reality (motion) and use it to reinterpret the dominant notions of ontology, such as space, time, force, quality, quantity, relation, and so on. From the vantage point of the present, the past can now be reinterpreted anew, without foreclosing the future.

On the Arrow of Spacetime

2018 ◽  
Author(s):  
Alexandre Harvey-Tremblay
Keyword(s):  
Time Horizon ◽  
Statistical Physics ◽  
Space Time ◽  
Arrow Of Time ◽  
Speed Of Light ◽  
Standard Description ◽  
The Past ◽  
The Future ◽  
Local Space ◽  
Future Events

Consistent with special relativity and statistical physics, here we construct a partition function of space-time events. The union of these two theories resolves longstanding problems in regards to time. It augments the standard description of time given by the (non-relativistic) arrow of time to one able to show the emergence of three macroscopic regimes of time: the past, the present, and the future, represented by space-like entropy, light-like entropy, and time-like entropy, respectively, and in a manner consistent with our experience of said regimes. First, using Fermi-Dirac statistics, we find that the system essentially describes a "waterfall" of space-time events. This "waterfall" recedes in space-time at the speed of light towards the direction of the future as it "floods" local space with events that it depletes from the past. In this union, an observer O will perceive two horizons that can be interpreted as hiding events behind it. The first is an event horizon, and its entropy hides events in the regions that O cannot see. The second is a time horizon, and its entropy "shields" events from O's causal influence. As only past events are "shielded", and not future events, an asymmetry in time is thus created. Finally, future events are hidden by an entropy prohibiting O from knowing the future before the present catches on.

8. Temporality, transcendence, and freedom

2019 ◽  
pp. 85-95
Author(s):  
Michael Inwood
Keyword(s):  
Space Time ◽  
Hostile Environment ◽  
Time And Space ◽  
The Past ◽  
The World ◽  
The Future ◽  
Sense Of Time

‘Temporality, transcendence, and freedom’ considers Dasein’s place within time and space. Time is a result of Dasein striving to impose order and significance on an apparently hostile environment. The past informs the opportunities to be found in the present and the future. As such, time makes living in the world possible. Dasein’s sense of time allows it to transcend the world and transcend temporality by actualizing its own purposes and constructing its own encounters. This ability to view the entities as possibilities rather than sheer actualities relies on the freedom that Dasein has. Thus, Dasein asks for the grounds of things because ‘to exist is already to philosophize’.

On the Arrow of Spacetime

2018 ◽  
Author(s):  
Alexandre Harvey-Tremblay
Keyword(s):  
Time Horizon ◽  
Statistical Physics ◽  
Space Time ◽  
Arrow Of Time ◽  
Speed Of Light ◽  
Standard Description ◽  
The Past ◽  
The Future ◽  
Local Space ◽  
Future Events

Consistent with special relativity and statistical physics, here we construct a partition function of space-time events. The union of these two theories resolves longstanding problems regarding time. We will argue that it augments the standard description of time given by the (non-relativistic) arrow of time to one able to describe the past, the present and the future in a manner consistent with our macroscopic experience of such. First, using Fermi-Dirac statistics, we find that the system essentially describes a "waterfall" of space-time events. This "waterfall" recedes in space-time at the speed of light towards the direction of the future as it "floods" local space with events that it depletes from the past. In this union, an observer $\mathcal{O}$ will perceive two horizons that can be interpreted as hiding events behind them. The first is an event horizon and its entropy hides events in the regions that $\mathcal{O}$ cannot see. The second is a time horizon, and its entropy "shields" events from $\mathcal{O}$'s causal influence. As only past events are "shielded" and not future events, an asymmetry in time is thus created. Finally, future events are hidden by an entropy prohibiting $\mathcal{O}$ from knowing the future before the present catches on.

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