## 2018

[1] On Freud's superpotential in General Relativity and in Einstein-Cartan theoryto appear in Physical Review D (2018) [1712.03268 gr-qc]

Jointly with F. W. Hehl

[2] On galaxy rotation curves from a continuum mechanics approach to modified gravity

International Journal of Modern Physics

**D27**(2018) 1850007 [1403.4110 gr-qc]

Jointly with N. Tamanini and M. Wright

## 2017

[1] Geometrically nonlinear Cosserat elasticity in the plane: applications to chiralityJournal of Mechanics of Materials and Structures

**12**(2017) 689-710 [1705.04868 math-ph]

Jointly with S. Bahamonde and P. Neff

[2] New classes of modified teleparallel gravity models

Physics Letters

**B775**(2017) 37-43 [1706.04920 gr-qc]

Jointly with S. Bahamonde and M. Krssak

[3] A Vaidya-type generalisation of Kerr space-time

Modern Physics Letters

**A32**(2017) 1750189 [1710.01059 gr-qc]

Jointly with P. A. Hogan

## 2016

[1] Modified teleparallel theories of gravity – Gauss-Bonnet and trace extensionsEuropean Physical Journal

**C76**(2016) 578 [1606.05557 gr-qc]

Jointly with S. Bahamonde

[2] Soliton-like solutions based on geometrically nonlinear Cosserat micropolar elasticity

Wave Motion

**60**(2016) 158-165 [1503.08860 math-ph]

Jointly with P. Neff and B. Seymenoglu

## 2015

[1] The Einstein static universe in Scalar-Fluid theoriesPhysical Review

**D92**(2015) 124067 [1510.01477 gr-qc]

Jointly with N. Tamanini and M. Wright

[2] Modified teleparallel theories of gravity

Physical Review

**D92**(2015) 104042 [1508.05120 gr-qc]

Jointly with S. Bahamonde and M. Wright

[3] Slowly rotating perfect fluids with a cosmological constant

General Relativity and Gravitation

**47**(2015) 143 [1411.5486 gr-qc]

Jointly with M. Wright

[4] Rotational elasticity and couplings to linear elasticity

Mathematics and Mechanics of Solids

**20**(2015) 959-974 [1008.4005 math-ph]

Jointly with N. Tamanini

[5] Generalized

*f(R,φ,X)*gravity and the late-time cosmic acceleration

Universe 2015, 1(2), 186-198 [1506.07728 gr-qc]

Jointly with S. Bahamonde, F. S. N. Lobo, D. Saez-Gomez

[6] Interacting quintessence from a variational approach Part II: derivative couplings

Physical Review

**D91**(2015) 123003 [1502.04030 gr-qc]

Jointly with N. Tamanini and M. Wright

[7] Interacting quintessence from a variational approach Part I: algebraic couplings

Physical Review

**D91**(2015) 123002 [1501.06540 gr-qc]

Jointly with N. Tamanini and M. Wright

## 2014

[1] Dynamical systems in cosmologyLTCC Advanced Mathematics Series: Volume 5, Dynamical and Complex Systems.

Edited by: S. Bullett, T. Fearn, F. Smith, World Scientific, Singapore (2017)

Graduate level student lecture notes [1409.5585 gr-qc]

Jointly with N. Chan

[2] From continuum mechanics to general relativity

Honorable mention in the 2014 essay competition of the Gravity Research Foundation

International Journal of Modern Physics

**D23**(2014) 1442015 [1405.4728 gr-qc]

Jointly with R. J. Downes

## 2013

[1] Einstein static Universe in hybrid metric-Palatini gravityPhysical Review

**D88**(2013) 104019 [1305.0025 gr-qc]

Jointly with F. S. N. Lobo and N. Tamanini

[2] A new approach to modifying theories of gravity

Foundations of Physics

**43**(2013) 1478-1488 [1301.5471 gr-qc]

Jointly with N. Tamanini

[3] Generalized hybrid metric-Palatini gravity

Physical Review

**D87**(2013) 084031 [1302.2355 gr-qc]

Jointly with N. Tamanini

## 2012

[1] Good and bad tetrads in*f(T)*gravity

Physical Review

**D86**(2012) 044009 [1204.4593 gr-qc]

Jointly with N. Tamanini

[2] Dynamics of dark energy models and centre manifolds

Physics Letters

**B714**(2012) 11-17 [1111.6247 gr-qc]

Jointly with N. Chan and R. Lazkoz

[3] Helicity – from Clifford to Graphene

Journal of Physics A: Mathematical and Theoretical

**45**(2012) 205206 [1204.0135 math-ph]

Jointly with L. Corpe

[4] Bounds on

*M/R*for Charged Objects with positive Cosmological constant

Classical and Quantum Gravity

**29**(2012) 095012 [1201.5725 gr-qc]

Jointly with H. Andréasson and A. Mussa

[5] Wormhole geometries in modified teleparralel gravity and the energy conditions

Physical Review

**D85**(2012) 044033 [1110.5756 gr-qc]

Jointly with T. Harko and F. S. N. Lobo

[6] A gauge theoretic approach to elasticity with microrotations

Proceedings of the Royal Society

**A468**(2012) 1391-1407 [1012.5951 math-ph]

Jointly with Y. N. Obukhov

[7] Jacobi stability analysis of dynamical systems – applications in gravitation and cosmology

Advances in Theoretical and Mathematical Physics

**16**(2012) 1145-1196 [1010.5464 math-ph]

Jointly with T. Harko and S. V. Sabau

[8] Book review: The Geometry of Physics: An Introduction (3rd edn), by T. Frankel

Contemporary Physics

**53**, Issue 5, (2012) 441-442

## 2011

[1] Existence of relativistic stars in*f(T)*gravity

Classical and Quantum Gravity

**28**(2011) 245020 [1107.4455 gr-qc]

Jointly with A. Mussa and N. Tamanini

[2] Rotational elasticity

The Quarterly J. of Mechanics and Applied Mathematics

**64**(2011) 415-439 [1008.3833 math-ph]

Jointly with R. J. Downes and D. Vassiliev

[3] Charged perfect fluids in the presence of a cosmological constant

General Relativity and Gravitation

**43**(2011) 3033-3046 [1010.1367 gr-qc]

Jointly with A. Mussa

[4] Book review: Structures in the Universe by Exact Methods, by K. Bolejko, A. Krasinski, C. Hellaby, M.-N. Celerier

General Relativity and Gravitation

**43**(2011) 923-924

## 2010

[1] Nonlinear stability analysis of the Emden-Fowler equationJournal of Nonlinear Mathematical Physics

**17**(2010) 503-516 [0902.1054 math-ph]

Jointly with T. Harko

[2] Stability of the Einstein static universe in IR modified Hořava gravity

European Physical Journal

**C70**(2010) 1111-1118 [0909.3986 gr-qc]

Jointly with F. S. N. Lobo

[3] Classical tests of general relativity in brane world models

Classical and Quantum Gravity

**27**(2010) 185013 [0910.3800 gr-qc]

Jointly with G. De Risi, T. Harko and F. S. N. Lobo

[4] Dark spinor models in gravitation and cosmology

Journal of High Energy Physics

**07**(2010) 053 [1003.3858 hep-th]

Jointly with J. Burnett, D. F. Mota and D. J. Shaw

[5] Quintessence with quadratic coupling to dark matter

Physical Review

**D81**(2010) 083003 [0911.3089 gr-qc]

Jointly with G. Caldera-Cabral, N. Chan, R. Lazkoz and R. Maartens

[6] Spin fluids in homogeneous and isotropic spacetimes

Ukrainian Journal of Physics

**55**(2010) 607-612 [gr-qc/0601089]

Jointly with P. Bronowski

[7] Dark energy with dark spinors

Modern Physics Letters

**A25**(2010) 101-110 [0906.1351 gr-qc]

Jointly with J. Burnett

[8] Book review: Introduction to Quantum Effects in Gravity, by V. F. Mukhanov and S. Winitzki

Contemporary Physics

**51**, Issue 5, (2010) 453

## 2009

[1] Bounds on*M/R*for static objects with a positive cosmological constant

Classical and Quantum Gravity

**26**(2009) 195007 [0904.2497 gr-qc]

Jointly with H. Andréasson

[2] Stability of the Einstein static universe in modified Gauss-Bonnet gravity

Physical Review

**D79**(2009) 067504 [0902.2982 gr-qc]

Jointly with F. S. N. Lobo

[3] Einstein static universes are unstable in generic f(R) models

Physical Review

**D79**(2009) 064009 [0901.0892 gr-qc]

Jointly with S. S. Seahra

## 2008

[1] Dark spinors with torsion in cosmologyPhysical Review

**D78**(2008) 104001 [0809.0469 gr-qc]

Jointly with J. Burnett

[2] Stability of the Schwarzschild Interior in Loop Quantum Gravity

Physical Review

**D78**(2008) 067501 [0807.3042 gr-qc]

Jointly with K. Vandersloot

[3] Dark spinor inflation – theory primer and dynamics

Physical Review

**D77**(2008) 123535 [0804.0616 astro-ph]

[4] Dynamics of dark energy with a coupling to dark matter

Physical Review

**D78**(2008) 023505 [0801.1565 gr-qc]

Jointly with G. Caldera-Cabral, R. Lazkoz and R. Maartens

[5] Solar system tests of brane world models

Classical and Quantum Gravity

**25**(2008) 045015 [0801.1375 gr-qc]

Jointly with T. Harko and F. S. N. Lobo

[6] Wormhole geometries with conformal motions

Classical and Quantum Gravity

**25**(2008) 075016 [0711.2424 gr-qc]

Jointly with T. Harko and F. S. N. Lobo

[7] Perfect fluid spheres with cosmological constant

Physical Review

**D77**(2008) 064008 [0711.1450 gr-qc]

Jointly with G. Fodor

[8] CMB Anisotropies and Inflation from Non-Standard Spinors

Physics Letters

**B663**(2008) 168-171 [0710.2003 astro-ph]

Jointly with D. F. Mota

[9] Generalized virial theorem in

*f(R)*gravity

Journal of Cosmology and Astroparticle Physics

**03**(2008) 024 [0710.0966 gr-qc]

Jointly with T. Harko and F. S. N. Lobo

[10] Dark matter as a geometric effect in

*f(R)*gravity

Astroparticle Physics

**29**(2008) 386-392 [0709.0046 gr-qc]

Jointly with T. Harko and F. S. N. Lobo

[11] A new two-sphere singularity in general relativity

International Journal of Modern Physics

**D17**(2008) 897-910 [gr-qc/0703024]

Jointly with F. S. N. Lobo

[12] Physics of dark energy particles

Foundations of Physics

**38**(2008) 216-227 [gr-qc/0602081]

Jointly with T. Harko

[13] Book review: Exotic Smoothness and Physics: Differential Topology and Spacetime Models, by T. Asselmeyer-Maluga and C.H. Brans

Contemporary Physics

**49**, Issue 5, (2008) 379-390

## 2007

[1] The Einstein-Yang-Mills equations from Bianchi identitiesModern Physics Letters

**A22**(2007) 2727-2735 [0710.0752 gr-qc]

Jointly with L. Fabbri

[2] Loop Quantum Dynamics of the Schwarzschild Interior

Physical Review

**D76**(2007) 104030 [0709.2129 gr-qc]

Jointly with K. Vandersloot

[3] Conformally symmetric traversable wormholes

Physical Review

**D76**(2007) 084014 [0708.1537 gr-qc]

Jointly with T. Harko and F. S. N. Lobo

[4] Stability of the Einstein static universe in

*f(R)*gravity

Physical Review

**D76**(2007) 084005 [0706.1663 gr-qc]

Jointly with L. Hollenstein and F. S. N. Lobo

[5] Can dark matter be a Bose-Einstein condensate?

Journal of Cosmology and Astroparticle Physics

**06**(2007) 025 [0705.4158 astro-ph]

Jointly with T. Harko

[6] Galactic dark matter as a bulk effect on the brane

Classical and Quantum Gravity

**24**(2007) 3191-3209 [0705.2496 gr-qc]

Jointly with T. Harko

[7] On Einstein clusters as galactic dark matter halos

Monthly Notices of the Royal Astronomical Society

**379**(2007) 393-398 [0705.1756 gr-qc]

Jointly with T. Harko

[8] Extra force in

*f(R)*modified theories of gravity

Physical Review

**D75**(2007) 104016 [0704.1733 gr-qc]

Jointly with O. Bertolami, T. Harko and F. S. N. Lobo

[9] Minimum mass-radius ratio for charged gravitational objects

General Relativity and Gravitation

**39**(2007) 757-775 [gr-qc/0702078]

Jointly with T. Harko

[10] The Einstein-Elko system – Can dark matter drive inflation?

Annalen der Physik

**16**(2007) 325-341 [gr-qc/0701087]

[11] Dark energy as a massive vector field

European Physical Journal

**C50**(2007) 423-429 [gr-qc/0701029]

Jointly with T. Harko

[12] The Einstein-Cartan-Elko system

Annalen der Physik

**16**(2007) 38-44 [gr-qc/0607088]

## 2006

[1] Bounds on the basic physical parameters for anisotropic compact general relativistic objectsClassical and Quantum Gravity

**23**(2006) 6479-6491 [gr-qc/0609061]

Jointly with T. Harko

[2] Scales set by the cosmological constant

Classical and Quantum Gravity

**23**(2006) 485-496 [gr-qc/0511057]

Jointly with A. Balaguera-Antolínez and M. Nowakowski

## 2005

[1] Does the cosmological constant imply the existence of a minimum mass?Physics Letters

**B630**(2005) 73-77 [gr-qc/0509110]

Jointly with T. Harko

[2] On inflation and torsion in cosmology

Acta Physica Polonica

**B36**(2005) 2841-2845 [gr-qc/0506033]

[3] Dynamical instability of fluid spheres in the presence of a cosmological constant

Physical Review

**D71**(2005) 084026 [gr-qc/0504075]

Jointly with T. Harko

[4] A note on dilaton gravity with non-smooth potentials

Modern Physics Letters

**A20**(2005) 1057-1064 [gr-qc/05020930]

Jointly with P. Bronowski

[5] The Spherically Symmetric Standard Model with Gravity

General Relativity and Gravitation

**37**(2005) 1435-1482 [gr-qc/0412098]

Jointly with H. Balasin and D. Grumiller

[6] Static perfect fluid balls with given equation of state and cosmological constant

Ukrainian Journal of Physics

**50**(2005) 1219-1225 [gr-qc/0409030]

[7] On astrophysical bounds of the cosmological constant

International Journal of Modern Physics

**D14**(2005) 1507-1525 [gr-qc/0409004]

Jointly with A. Balaguera-Antolínez and M. Nowakowski

## 2004

[1] Eleven spherically symmetric constant density solutions with cosmological constantGeneral Relativity and Gravitation

**36**(2004) 1039-1054 [gr-qc/0312027]

[2] The Einstein static universe with torsion and the sign problem of the cosmological constant

Classical and Quantum Gravity

**21**(2004) 1119-1124 [gr-qc/0310058]

All my papers from inSPIRE with citations