Tags » Loop Quantum Gravity

Teori String Bertemu Loop Quantum Gravity

Oleh: Sabine Hossenfelder
12 Januari 2016
Sumber: www.quantamagazine.org

Dua calon utama “theory of everything”, yang sudah lama dianggap tidak serasi, mungkin merupakan dua sisi mata uang yang sama. 1,617 more words

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Bukti Pendukung Teori String di Alam Semesta Palsu

Oleh: Natalie Wolchover
18 Februari 2015
Sumber: www.quantamagazine.org

Para peneliti menunjukkan bahwa dalam konteks tertentu, teori string adalah satu-satunya teori gravitasi quantum yang konsisten. Mungkinkah ini menjadi kenyataan? 2,456 more words

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Want to crush a singularity? First make it strong and then ...

by Parampreet Singh.

Einstein’s theory of classical general relativity breaks down when spacetime curvature
becomes extremely large near the singularities. To answer the fundamental questions… 1,182 more words

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Black holes are 'portals to other universes,' according to new quantum results

Black holes may not end in a crushing singularity as previously thought, but rather open up passageways into whole other universes.

According to Albert Einstein’s theory of general relativity, black holes are uninhabitable chasms of spacetime that end in a “singularity,” or a mass of infinite density. 657 more words

COSMOLOGY AND ASTOPHYSICS

Propagation in the absence of classical spacetime

Written by Madhavan Varadarajan

At the Planck scale of 10−33cm, where the very notion of classical spacetime ceases to exist due to large quantum fluctuations of spacetime geometry, can meaning be given to the notion of “causality”? 864 more words

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The possible emptiness of a final theory

Written by Jesper Møller Grimstrup, an independent danish theoretical physicist. He has collaborated with the mathematician Johannes Aastrup for more than a decade developing what they now call quantum holonomy theory. 968 more words

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Book review: Covariant Loop Quantum Gravity, an elementary introduction to quantum gravity and spinfoam theory

Review of “Covariant Loop Quantum Gravity, an elementary introduction to quantum gravity and spinfoam theory” by Carlo Rovelli and Francesca Vidotto

One of the central problems of contemporary physics is finding a theory that allows for describing the quantum behavior of the gravitational field. 1,133 more words

Quantum Gravity