Here is an earlier picture of Dr Gribakin with an apple...

This is how Queen's University and its surrounds look through the seasons: Autumn, Winter (atypical), Spring

You can find Queen's at the bottom of the Belfast City Centre map.

My research interests are mainly in Theoretical Atomic Physics, and I do my research in the Centre for Theoretical Atomic, Molecular and Optical Physics (CTAMOP).

- Many-body theory in atoms.
- Electron-atom scattering, negative ions, photodetachment.
- Interaction of positrons with atoms and molecules: scattering, bound states and annihilation.
- Quantum chaos in complex atoms and other many-body systems.
- Multiphoton processes in strong laser fields.
- Cold atom scattering.

- D. G. Green, A. R. Swann, and G. F. Gribakin, Many-body theory for
positronium-atom interactions, Phys. Rev. Lett.
**120**, 183402 (2018). Full text in PDF. - D. G. Green and G. F. Gribakin, Enhancement factors for positron
annihilation on valence and core orbitals of noble-gas atoms. In: Y. Wang,
M. Thachuk, R. Krems, and J. Maruani (eds.),
*Concepts, Methods and Applications of Quantum Systems in Chemistry and Physics*, Progress in Theoretical Chemistry and Physics, vol. 31 (Springer, 2018), pp. 243-263. Full text in PDF. Original publication. - A. R. Swann and G. F. Gribakin, Calculations of positronium-atom
scattering using a spherical cavity, Phys. Rev. A
**97**, 012706 (2018). Full text in PDF. - G. F. Gribakin, J. F. Stanton, J. R. Danielson, M. R. Natisin, and
C. M. Surko, Mode coupling and multiquantum vibrational excitations in
Feshbach-resonant positron annihilation in molecules, Phys. Rev. A
**96**, 062709 (2017). Full text in PDF. - R. Brown, Q. Prigent, A. R. Swann, and G. F. Gribakin, Effective radius
of ground- and excited-state positronium in collisions with hard walls,
Phys. Rev. A
**95**, 032705 (2017). Full text in PDF. - A. R. Swann, D. B. Cassidy, A. Deller, and G. F. Gribakin, Formation of
positron-atom bound states in collisions between Rydberg Ps and neutral atoms,
Phys. Rev. A
**93**, 052712 (2016). Full text in PDF. - S. M. K. Law and G. F. Gribakin, Dynamics of atomic spin-orbit-state wave
packets produced by short-pulse laser photodetachment, Phys. Rev. A
**94**, 053402 (2016). Full text in PDF. - B. M. Roberts, V. V. Flambaum, and G. F. Gribakin, Ionization of atoms by
slow heavy particles, including dark matter, Phys. Rev. Lett.
**116**, 023201 (2016). Full text in PDF. - G. F. Gribakin and A. R. Swann, Effect of dipole polarizability on
positron binding by strongly polar molecules, J. Phys. B
**48**, 215101 (2015). Full text in PDF. - V. V. Flambaum, M. G. Kozlov, and G. F. Gribakin, Coherent and stochastic
contributions of compound resonances in atomic processes: Electron
recombination, photoionization, and scattering, Phys. Rev. A
**91**, 052704 (2015). Full text in PDF. - D. G. Green and G. F. Gribakin, γ-ray spectra and enhancement
factors for positron annihilation with core electrons, Phys. Rev. Lett.
**114**, 093201 (2015). Full text in PDF. - D. G. Green, J. A. Ludlow, and G. F. Gribakin, Positron scattering and
annihilation on noble-gas atoms, Phys. Rev. A
**90**, 032712 (2014). Full text in PDF. ERRATUM: In Eq. (31) the second term in square brackets should contain*k*instead of*k*^{2}. - I. I. Fabrikant and G. F. Gribakin, Similarity between positronium-atom
and electron-atom scattering, Phys. Rev. Lett.
**112**, 243201 (2014). Full text in PDF. - V. A. Dzuba, V. V. Flambaum, G. F. Gribakin, C. Harabati, and
M. G. Kozlov, Electron recombination, photoionization, and scattering via
many-electron compound resonances, Phys. Rev. A
**88**, 062713 (2013). Full text in PDF. - D. G. Green and G. F. Gribakin, Positron scattering and annihilation in
hydrogenlike ions, Phys. Rev. A
**88**, 032708 (2013). Full text in PDF. - V. A. Dzuba, V. V. Flambaum, G. F. Gribakin, and C. Harabati,
Chaos-induced enhancement of resonant multielectron recombination in highly
charged ions: Statistical theory, Phys. Rev. A
**86**, 022714 (2012). Full text in PDF. - V. V. Flambaum, G. H. Gossel and G. F. Gribakin, Dense spectrum of
resonances and particle capture in a near-black-hole metric,
Phys. Rev. D
**85**, 084027 (2012). Full text in PDF. - A. C. L. Jones, J. R. Danielson, M. R. Natisin, C. M. Surko, and
G. F. Gribakin, Ubiquitous nature of multimode vibrational resonances in
positron-molecule annihilation, Phys. Rev. Lett.
**108**, 093201 (2012). Full text in PDF. - V. A. Dzuba, V. V. Flambaum and G. F. Gribakin, Detecting positron-atom
bound states through resonant annihilation, Phys. Rev. Lett.
**105**, 203401 (2010). Full text in PDF. - J. Ludlow and G. Gribakin, Many-body theory calculations of
positron binding to negative ions, Int. Rev. At. Mol. Phys.
**1**, 73 (2010). Full text in arXiv.org. - G. F. Gribakin, J. A. Young, and C. M. Surko, Positron-molecule
interactions: Resonant attachment, annihilation, and bound states,
Rev. Mod. Phys.
**82**, 2557-2607 (2010). Full text in PDF. Original publication. - A. Delserieys, F. Y. Khattak, S. Sahoo, G. F. Gribakin, C. L. S. Lewis,
and D. Riley, Raman satellites in optical scattering from a laser-ablated
Mg plume, Phys. Rev. A
**78**, 055404 (2008). Full text in PDF. - L. G. Gerchikov and G. F. Gribakin, Electron attachment to SF
_{6}and lifetimes of SF_{6}^{-}negative ions, Phys. Rev. A**77**, 042724 (2008). Full text in PDF. - G. F. Gribakin and C. M. R. Lee, Positron annihilation in molecules by
capture into vibrational Feshbach resonances of infrared-active modes,
Phys. Rev. Lett.
**97**, 193201 (2006). Full text in PDF. ERRATA: the right-hand side of Eq. (10) must contain an additional factor 1/2. The results in Figs. 1 and 2 are correct. Thanks to Jason Young for spotting the misprint. Three lines below Eq. (7) should read*h*(0) =*h*(1) = 0. - A. V. Korol, G. F. Gribakin and F. J. Currell, Effect of target
polarization in electron-ion recombination, Phys. Rev. Lett.
**97**, 223201 (2006). Full text in PDF. - L. J. M. Dunlop and G. F. Gribakin, Many-body theory of gamma
spectra from positron-atom annihilation, J. Phys. B
**39**, 1647 (2006). Full text in PDF. ERRATUM: the right-hand side of Eq. (34) must contain (2*l*_{1}+1) under the sum. - G. F. Gribakin, F. J. Currell, M. G. Kozlov and A. I. Mikhailov,
Parity nonconservation in electron recombination of multiply charged ions,
Phys. Rev. A
**72**, 032109 (2005). Full text in PDF. Erratum, Phys. Rev. A**80**, 049901(E) (2009). - C. M. Surko, G. F. Gribakin and S. J. Buckman, Low-energy positron
interactions with atoms and molecules. J. Phys. B
**38**, R57 (2005). Full text in PDF can be dowhloaded here. - G. F. Gribakin, S. Sahoo and V. N. Ostrovsky,
Secondary threshold laws for multiple ionization of atoms.
Phys. Rev. A
**70**, 062717 (2004). Full text in PDF. - G. F. Gribakin and J. Ludlow, Many-body theory of positron-atom
interactions. Phys. Rev. A
**70**, 032720 (2004). Full text in PDF. - G. F. Gribakin. Theory of positron annihilation on molecules. In
*New Directions in Antimatter Chemistry and Physics*, Eds. C. M. Surko and F. A. Gianturco, Chapter 22 (Kluwer Academic Publishers, Dordrecht, 2001). Full text in PDF. - V. V. Flambaum and G. F. Gribakin, Statistical theory of finite
Fermi systems with chaotic excited eigenstates, Philosophical Magazine
B
**80**, 2143-73 (2000). Full text in PDF.

Still at school and thinking about doing a Mathematics or Applied Mathematics and/or Theoretical Physics degree? These are all largely about problem solving, and here is a selection of some of my favourite simple and not so simple maths problems.

Dr. Gleb Gribakin / phone: +44 (0)28 90971936

E-mail: g.gribakin@qub.ac.uk