PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE
 | Macroscopic Gravity and the Conformal Anomaly Speaker(s): Emil Mottola
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Date: 11/09/2019 - 11:00 am
Collection: Simplicity III
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 | Discussion: Is there novel physics at the black hole horizon? Speaker(s): Emil Mottola
Abstract:
Date: 05/09/2019 - 4:00 pm
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 | Tensor renormalization group in bosonic field theory Speaker(s): Emil Mottola
Abstract: We compute the partition function of a massive free boson in a square lattice using a tensor network algorithm. We introduce a singular value decomposition (SVD) of continuous matrices that leads to very accurate numerical results. It is shown the emergence of a CDL fixed point structure. In the mas... read more
Date: 08/04/2019 - 3:00 pm
Series: Tensor Network
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 | Conformal Horizon Fluctuations in de Sitter Space, Dynamical Dark Energy & the CMB Speaker(s): Emil Mottola
Abstract: Infrared sensitivity of the de Sitter decay rate due to particle creation requires that gravitational backreaction be taken into account on the horizon scale. At lowest order, backreaction can be studied by Linear Response of the geometry to quantum matter perturbations around the Bunch-Davies state... read more
Date: 18/12/2018 - 10:30 am
Series: Cosmology & Gravitation
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 | Instability of de Sitter Space & Dynamical Dark Energy Speaker(s): Emil Mottola
Abstract: Cosmological vacuum energy does not remain constant for the same reason that a uniform electric field cannot persist indefinitely in the presence of quantum fluctuations. The decay rate of the Bunch-Davies state of QFT in de Sitter space due to particle creation is calculated in real time by the sam... read more
Date: 03/12/2018 - 4:30 pm
Series: Cosmology & Gravitation
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 | The Conformal Anomaly Effective Theory of Gravity III: Scalar Gravitational Waves, Black Holes and Dark Energy Speaker(s): Emil Mottola
Abstract: In this third of 3 talks I will discuss the effects of the conformal anomaly in the low energy infrared relevant correction to General Relativity. Among the significant implications of this effective field theory of gravity are the prediction of scalar gravitational wave solutions—a spin-0 breathe... read more
Date: 25/10/2018 - 10:30 am
Series: Cosmology & Gravitation
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 | Macroscopic Effects of the Quantum Conformal Anomaly: Scalar Gravitational Waves, Black Holes, and Dark Energy Speaker(s): Emil Mottola
Abstract: In the second lecture, I will extend the previous discussion to gravity, and show that the conformal trace anomaly must play a special role in the effective field theory of low energy gravity. Classical General Relativity receives an infrared relevant modification from the conformal trace anomaly of... read more
Date: 18/10/2018 - 10:30 am
Series: Cosmology & Gravitation
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 | Macroscopic Effects of Quantum Anomalies Speaker(s): Emil Mottola
Abstract: In this first of two lectures, intended to be a pedagogical introduction, I will review the quantum field theory origin of anomalies starting with the more familiar example of the axial anomaly in QED, emphasizing the infrared effects and the appearance of a two-particle massless state, similar to a... read more
Date: 17/10/2018 - 10:00 am
Series: Cosmology & Gravitation
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 | What’s the Matter with Black Holes? Gravitational Condensate Stars & New Horizons in the LIGO Era Speaker(s): Emil Mottola
Abstract: Conventional equations of state suggest that in complete gravitational collapse a singular state of matter with infinite density could be reached finally to a black hole, the characteristic feature of which is its apparent horizon, where light rays are first trapped. The loss of information to the o... read more
Date: 04/10/2018 - 1:00 pm
Series: Strong Gravity
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 | TBA Speaker(s): Emil Mottola
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Date: 13/11/2017 - 12:10 pm
Collection: The Path Integral for Gravity
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 | Schwarzschild's Interior Solution, Gravastars and Echoes Speaker(s): Emil Mottola
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Date: 10/11/2017 - 9:20 am
Collection: Quantum Black Holes in the Sky?
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 | New Horizons in Cosmology: The Trace Anomaly, Cosmological Horizon Modes and Dynamical Dark Energy Speaker(s): Emil Mottola
Abstract: General Relativity receives quantum corrections relevant at macroscopic distance scales and near event horizons. These arise from the conformal scalar degrees of freedom in the extended effective field theory of gravity generated by the trace anomaly of massless quantum fields in curved space. Linea... read more
Date: 27/10/2010 - 9:45 am
Collection: IR issues and loops in de Sitter space - 2010
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