## Brustein, Ram

##### Faculty

- ramyb@bgu.ac.il
- Office
- 54/313 54/315
- Phone
- 08-6472509

08-6472507 - Website
- https://sites.physics.bgu.ac.il/ramyb/
- Research type
- Theoretical
- Research topics
Black Holes; Cosmology; Gravitation; String theory

- Researcher identification
- Google Scholar, ResearcherID, ORCID

### Research group

- PhD student, Shani Avitan
- PhD student, Hagar Meir
- PhD student, Tom Shindelman
- PhD student, Tamar Simhon

### Past graduate students *

- Lilian Saiegh, MSc (2024)
- Chana Hausmann, MSc (2023)
- Yotam Sherf, PhD (2023)
- Yoav Zigdon, PhD (2023)
- Ira Wolfson, PhD (2019)
- Itay Raveh, MSc (2019)
- Yoav Zigdon, MSc (2019)
- Ira Wolfson, MSc (2018)
- Yotam Sherf, MSc (2018)
- Yael Raveh, MSc (2018)
- Amos Yarom, PhD (2018)
- Daniel Levy, PhD (2018)

### Past undergraduate students *

* Past students / postdocs data might be incomplete## Research highlights

#### Quantum gravity & quantum black holes

Are Einstein's equations and general relativity compatible with quantum mechanics? In spite of intense efforts over the last 40 years by some of the best physicists we still do not know the answer .

I study the properties of black holes and other space-times with horizons to probe the laws of quantum gravity. Based on our recent research, our proposed answer is: Yes. The apparent incompatibilities between general relativity and quantum mechanics originate from the extreme approximation of treating spacetime as a strictly classical geometric object.

#### Cosmology

The early universe is used as a theoretical laboratory for studying fundamental physics, the laws of gravity and quantum mechanical aspects of matter under extreme conditions.

We study models of cosmic inflation in the early universe and dark energy in the late universe and their possible realizations in quantum field theory and string theory models.

Our recent research focuses on models of high-scale inflation which produce an observable signal of gravitational waves in the cosmic microwave background.