Loop Quantum Gravity: from Computation to Phenomenology

环量子引力:从计算到现象学

基本信息

  • 批准号:
    RGPIN-2020-06561
  • 负责人:
  • 金额:
    $ 1.75万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2022
  • 资助国家:
    加拿大
  • 起止时间:
    2022-01-01 至 2023-12-31
  • 项目状态:
    已结题

项目摘要

At the frontier of fundamental physics there is the problem of combining quantum theory and Einstein's General Relativity. Today we have tentative theories that try to achieve this goal -or theories of quantum gravity- but none of these theories is yet tested by experiments or observations support. The goal of my Discovery program is to develop theoretical tools that could lead us to test these theories. There are two domains where quantum gravity is expected to play a significant role in describe nature: black hole physics and the Big Bang. Einstein's General Relativity disregards quantum theory and is not reliable for predicting what happens at the center of a black hole, or what happens to the black hole in the distant future. A quantum gravity theory currently under study, Loop Quantum Gravity, suggests that quantum effects in these regions determine a transition (a tunnelling effect) that transforms a black hole into a white hole, which can subsequently emit matter. My program of research will develop recently produced computer programs that compute transition probabilities in Loop Quantum Gravity, with the aim of applying them to determine the parameters of this black hole to white hole transition. It will then use these results to compare the predictions of the theory with astrophysical observations, such as high-energy cosmic rays or extra-galactic radio signals, to study if these observations, or other astrophysical phenomena such as dark matter, could be connected to the black-hole to white-hole transition. The same computer codes can also be developed and used to study the behaviour of the primordial universe. Loop Quantum Gravity indicates that the observed cosmic explosion that has generated the universe we observe could be the result of a bounce following a previous contraction phase. This project aims at studying the strong quantum gravitational phenomena expected at the bounce. In particular, it aims at studying the quantum fluctuations of the spacetime geometry generated at that time, and the effect that these might have had on the formation of the large structures of the universe, such as galaxies and galaxy clusters. The objective is to be able to get more elements of knowledge concerting the early life of our Universe, and, hopefully, find some observables traces of primordial quantum gravitational phenomena in observable cosmological phenomena such as the Cosmic Background Radiation.
在基础物理学的前沿,有一个将量子理论与爱因斯坦的广义相对论结合起来的问题。今天,我们有尝试实现这一目标的尝试性理论--或量子引力理论--但这些理论都没有经过实验或观测的检验。我的探索计划的目标是开发理论工具,可以引导我们测试这些理论。有两个领域,量子引力预计将在描述自然中发挥重要作用:黑洞物理学和大爆炸。 爱因斯坦的广义相对论忽视了量子理论,对于预测黑洞中心发生的事情,或者在遥远的未来黑洞会发生什么,都是不可靠的。目前正在研究的一个量子引力理论,环量子引力,表明这些区域的量子效应决定了一个转变(隧道效应),将黑洞转变为白色洞,随后可以发射物质。我的研究计划将开发最近生产的计算机程序,计算圈量子引力的跃迁概率,目的是应用它们来确定这个黑洞到白色洞跃迁的参数。然后,它将使用这些结果将理论的预测与天体物理观测(如高能宇宙射线或银河系外无线电信号)进行比较,以研究这些观测或其他天体物理现象(如暗物质)是否与黑洞到白洞的转变有关。 同样的计算机代码也可以被开发出来,用于研究原始宇宙的行为。圈量子引力表明,我们所观察到的宇宙爆炸产生了我们所观察到的宇宙,这可能是前一个收缩阶段之后反弹的结果。该项目旨在研究反弹时预期的强量子引力现象。特别是,它旨在研究当时产生的时空几何的量子涨落,以及这些涨落可能对宇宙的大结构(如星系和星系团)的形成产生的影响。我们的目标是能够获得更多的知识元素,协调我们的宇宙的早期生活,并希望在可观测的宇宙学现象,如宇宙背景辐射中找到一些原始量子引力现象的可观测的痕迹。

项目成果

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Vidotto, Francesca其他文献

Vidotto, Francesca的其他文献

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{{ truncateString('Vidotto, Francesca', 18)}}的其他基金

Foundations of Physics
物理学基础
  • 批准号:
    CRC-2020-00118
  • 财政年份:
    2022
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Canada Research Chairs
Loop Quantum Gravity: from Computation to Phenomenology
环量子引力:从计算到现象学
  • 批准号:
    RGPIN-2020-06561
  • 财政年份:
    2021
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Foundations Of Physics
物理学基础
  • 批准号:
    CRC-2020-00118
  • 财政年份:
    2021
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Canada Research Chairs
Loop Quantum Gravity: from Computation to Phenomenology
环量子引力:从计算到现象学
  • 批准号:
    RGPIN-2020-06561
  • 财政年份:
    2020
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Loop Quantum Gravity: from Computation to Phenomenology
环量子引力:从计算到现象学
  • 批准号:
    DGECR-2020-00228
  • 财政年份:
    2020
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Launch Supplement
Foundations of Physics
物理学基础
  • 批准号:
    1000232885-2019
  • 财政年份:
    2020
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Canada Research Chairs

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  • 批准号:
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  • 批准年份:
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  • 资助金额:
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  • 批准号:
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  • 财政年份:
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