Research
In the laboratory a range problems of high-energy physics, general relativity and mathematical physics are investigated.
The main topics include:
- Gravitation, cosmology, and string theory
- Modifications of Einstein's gravity, cosmological models in these
theories
- various cosmological and gravity solutions from string theory compactifications
- High energy physics phenomenology
- electroweak interaction beyond the Standard Model
- higher-spin fields and interactions
Current projects
Projects funded by the Estonian Research Council:
Projects funded by the Estonian Science Foundation:
Some recent publications
- Stefan Groote, Hannes Liivat, Ilmar Ots, Tiit Sepp,
Probing scalar particle and unparticle couplings in e+ e- ---> t anti-t with transversely polarized beams,
Eur. Phys. J. C66: 271-281 (2010) (preprint version arXiv:0908.2027 [hep-ph])
- Rein Saar, Stefan Groote, Hannes Liivat, Ilmar Ots,
Dynamical' interactions and gauge invariance,
Phys. Rev. D84: 065022 (2011) (preprint version arXiv:0908.3761 [hep-th])
- L. Järv, P. Kuusk, M. Saal, Potential dominated scalar-tensor cosmologies in the general relativity limit: phase space view, Phys. Rev. D 81,
104007
(2010) (preprint version arXiv:1003.1686 [gr-qc])
- L. Järv, P. Kuusk, M. Saal, Scalar-tensor cosmologies with a potential in the general relativity limit: time evolution, Phys. Lett. B 694,
1
(2010) (preprint version arXiv:1006.1246 [gr-qc])
- Rein Saar, Stefan Groote, Hannes Liivat, Ilmar Ots,
Gauge and Lorentz transformation placed on the same foundation,
Adv. Math. Phys. 652126 (2011) (preprint version arXiv:1006.2039 [hep-th])
- Stefan Groote, Hannes Liivat, Ilmar Ots,
Symmetries and similarities for spin orientation parameters in e^+ e^- -> ZH, Z\gamma, ZZ at SM thresholds,
Nucl. Phys. B843 213-222 (2011) (preprint version arXiv:1008.0917 [hep-th])
- L. Järv, P. Kuusk, M. Saal, Scalar-tensor cosmologies with dust matter in the general relativity limit, Phys. Rev. D 85,
064013
(2012) (preprint version arXiv:1112.5308 [gr-qc])
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