Papers since 2020
- S. Cotsakis, J. P. Mimiso, J. Miritzis, Legendre scalarization in gravity and cosmology, Eur. Phys. J. C (2023) 83:433; arXiv:2305.04011
- I. Antoniadis, S. Cotsakis, D. Trachilis, Sudden Shock Waves in modified gravity; arXiv:2304.13291
- S. Cotsakis, J. P. Mimiso, J. Miritzis, The cosmological frame principle and cosmic acceleration; arXiv:2304.12733
- S. Cotsakis and J. Miritzis, Trans-Planckian censorship and spacetime singularities; Mathematics 2023, 11, 633; arXiv:2301.00156
- S. Cotsakis, Dynamical synchronization, the horizon problem, and initial conditions for inflation, LHEP to appear; arXiv:2208.07104
- S. Cotsakis, Dispersive Friedmann universes and synchronization, Gen. Rel. Grav. 55 (2023) 61; arXiv:2208.07892; https://rdcu.be/dai9X; DOI:10.1007/s10714-023-03109-4
- I. Antoniadis, S. Cotsakis, J. Miritzis, Localizing branes with bifurcating bulks, Eur. Phys. J. C82 (2022) 785; arXiv:2205.08125
- S. Cotsakis and A. P. Yefremov, 100 years of mathematical cosmology: Models, theories, and problems, Part B, Phil. Trans. R. Soc. A.380 (2022) 20210171; arXiv:2203.16443
- S. Cotsakis and A. P. Yefremov, On the 100th anniversary of mathematical cosmology, Metaphysica 43 (2022) 59-65 (in Russian)
- S. Cotsakis and A. P. Yefremov, A time slice of mathematical cosmology, Grav. Cosm. 28 (2022) 99-101
- S. Cotsakis and A. P. Yefremov, 100 years of mathematical cosmology: Models, theories, and problems, Part A, Phil. Trans. R. Soc. A.380 (2022) 20210191;arXiv:2203.16443
- S. Cotsakis and A. P. Yefremov, Preface to ‘The future of mathematical cosmology’, Phil. Trans. R. Soc. A. 380 (2022) 20210002
- S. Cotsakis and A. P. Yefremov (Eds.), The future of mathematical cosmology, Phil. Trans. R. Soc. A.380 (2022) Theme Issues 2222 and 2230
- S. Cotsakis, I. Klaoudatou, G. Kolionis, J. Miritzis, D. Trachilis, The conformal cosmological potential, Astronomy 1 (2022) 17–35; arXiv:2202.06536
- I. Antoniadis, S. Cotsakis, I. Klaoudatou, Brane-world asymptotics in a nonlinear fluid bulk, In: Proceedings of the Sixteenth Marcel Grossman Meeting on General Relativity; arXiv:2110.15077
- I. Antoniadis, S. Cotsakis, I. Klaoudatou, Brane-world singularities and asymptotics of five-dimensional bulk fluids, Phil. Trans. R. Soc. A 380: 20210180; arXiv:2110.15079
- S. Cotsakis, Primordial synchronization of Mixmaster spatial points, In: Proceedings of the Sixteenth Marcel Grossman Meeting on General Relativity, arXiv:2109.02947
- I. Antoniadis, S. Cotsakis, I. Klaoudatou, Regular braneworlds with nonlinear bulk-fluids, Eur. Phys. J. C 81, 771 (2021); arXiv:2106.15669
- I. Antoniadis, S. Cotsakis, Geodesic incompleteness and partially covariant gravity, Universe 7(5) (2021) 126; arXiv:2102.07806
- S. Cotsakis and D. Trachilis,The radiation instability in modified gravity, Int. J. Mod. Phys. A36 (2021) 2150060; arXiv: 2012.05850
- S. Cotsakis, Onset of synchronization in coupled Mixmaster oscillators, Phil. Trans. R. Soc. A380 (2022) 20210189; arXiv: 2010.00298
- J. D. Barrow, S. Cotsakis and D. Trachilis, The Generic Sudden Singularity in Brans-Dicke Theory, Eur. Phys. J. C 80, 1197 (2020); arXiv: 2009.01732
- J. D. Barrow, S. Cotsakis, Inflation without a trace of Lambda, Eur. Phys. J. C80 (2020) 839; arXiv:1907.02928
Selected older works
- J. D. Barrow and S. Cotsakis, Inflation and the Conformal Structure of Higher-Order Gravity Theories, Phys. Lett. B214 (1988) 515–518
- S. Cotsakis, Escape Rates for the Quiescent Self-Regenerating Universe, Phys. Lett. B328 (1994) 270–273
- S. Cotsakis, J. Miritzis and L. Querella, Variational and conformal structure of nonlinear metric-connection gravitational lagrangians, J. Math. Phys. 40 (1999) 3063–3071
- Y. Choquet-Bruhat and S. Cotsakis, Global Hyperbolicity and Completeness. J. Geom. Phys. 43 (2002) 345–350
- S. Cotsakis, Global Hyperbolicity of Sliced Spaces, Gen. Rel. Grav. 36 (2004) 1183–1188
- S. Cotsakis and J. D. Barrow, The Dominant Balance at Cosmological Singularities, In Proceedings of the Greek Relativity Meeting NEB12, June 29-July 2, 2006, Nauplia, Greece, J. Phys. Conf. Ser. 68 (2007) 012004
- S. Cotsakis, Asymptotic Poincar\’e compactification and finite singularities, Grav. Cosm. 19 (2013) 240; arXiv:1301.4778
- J. D. Barrow, S. Cotsakis, Geodesics at Sudden Singularities, Phys. Rev. D88 (2013) 067301; arXiv:1307.5005
- I. Antoniadis, S. Cotsakis, Ambient cosmology and spacetime singularities. Eur. Phys. J. C75 (2015) 1-12, CERN-PH-TH/2014-176, arXiv:1409.2220
- I. Antoniadis, S. Cotsakis, Topology of the ambient boundary and the convergence of causal curves, Mod. Phys. Lett. A30 (2015) 1550161; arXiv:1505.04737
Older works list
- S. Cotsakis, Theories of Star Formation, MSc Thesis (University of Sussex Archives, 1987)
- J. D. Barrow and S. Cotsakis, Inflation and the Conformal Structure of Higher-Order Gravity Theories, Phys. Lett. B214 (1988) 515–518
- J. D. Barrow and S. Cotsakis, Chaotic Behaviour in Higher-Order Gravity Theories, Phys. Lett. B232 (1989) 172–176
- S. Cotsakis, Cosmological Models in Higher-Order Gravity, PhD Thesis (University of Sussex Archives, 1990)
- J. D. Barrow and S. Cotsakis, Self-Regenerating Inflationary universe in higher-order gravity in arbitrary dimension, Phys. Lett. B258 (1991) 299–306
- S. Cotsakis, Quiescent Self-Regenerating Universe. In Proceedings of the First Greek Astronomical Meeting, P. Laskarides, (ed.), Athens 1992, pp. 135-140
- S. Cotsakis, Chaos in the Universe: Myth or Reality? Nonlinear News 3 (1992) 25-30 (in Greek)
- S. Cotsakis, Conformal Transformations Single Out a Unique Measure of Distance, Phys. Rev. D47 (1993) 1437-1439; Erratum: Phys. Rev. D49 (1994) 1145
- S. Cotsakis, J. Demaret, Y. de Rop and L. Querella, Mixmaster Universe in Fourth-Order Gravity Theories, Phys. Rev. D48 (1993) 4595–4603
- S. Cotsakis and G. Flessas, Stability of FRW Cosmology in Higher Order Gravity, Phys. Rev. D48 (1993) 3577–3584
- S. Cotsakis and G. Flessas, Generalized No-Hair Theorems, Phys. Lett. B319 (1993) 69–73
- S. Cotsakis and P. G. L. Leach, Painlev´e Analysis of the Mixmaster Universe, J. Phys. A27 (1993) 1625–1631
- S. Cotsakis and P. Saich, Power-Law Inflation and Conformal Transformations, Class. Quant. Grav. 11 (1994) 383–387
- S. Cotsakis, Escape Rates for the Quiescent Self-Regenerating Universe, Phys. Lett. B328 (1994) 270–273
- S. Cotsakis, P. G. L. Leach and G. Flessas, Minimally Coupled Scalar Field Wormholes, Phys. Rev. D49 (1994) 6489–6492
- G. Flessas, P. G. L. Leach and S. Cotsakis, Comment on a Paper Concerning Symmetries of Equations of Motion and Equivalent Lagrangians, Can. J. Phys. 72 (1994) 86–88
- G. Flessas, P. G. L. Leach and S. Cotsakis, On Noether’s formulation of her theorem, Can. J. Phys. 73 (1995) 543
- S. Cotsakis and G. Flessas, Past-Instability Conjecture and Cosmological Attractors in Generalized Isotropic Universes, Phys. Rev. D51 (1995) 4160–4168
- S. Cotsakis and G. Flessas, Graviton Creation and Conformal Non-Invariance in Higher Order Gravity Theories, Phys. Rev. D52 (1995) 5783–5786
- S. Cotsakis, Reply to Two Comments by Teyssandier and by Schmidt, Phys. Rev. D52 (1995) 6199–6200
- J. Miritzis and S. Cotsakis, Non-Linear Lagrangians and the Isotropy of the Universe, Phys. Lett. B383 (1996) 377–382
- S. Cotsakis and G. W. Gibbons, (eds.) Global Structure and Evolution in General Relativity, Springer LNP, 460 (1996)
- S. Cotsakis, R. Lemmer and P. G. L. Leach, Adiabatic Invariants and Mixmaster Catastrophes, Phys. Rev. D57 (1998) 4691–4698
- S. Cotsakis and J. Miritzis, Proof of the Cosmic No-Hair Conjecture for Some Quadratic Homogeneous Cosmologies Class. Quant. Grav. 15 (1998) 2795–2801
- S. Cotsakis, P.G.L. Leach and H. Pantazi Symmetries of homogeneous cosmologies, Grav. Cosm. 4 (1998) 314–325
- S. Cotsakis Inflation, Baby-Universes and Hawking’s Proposal, Oikonomikos Taxidromos, 5 November 1998, 118-120
- S. Cotsakis Mathematical problems in higher order gravity and cosmology, In Proceedings of the Eighth Marcel Grossman Meeting on General Relativity, T. Piran and R. Ruffini, eds., (World Scientific, 1999), pp. 505–507
- S. Cotsakis, J. Miritzis and L. Querella, Variational and conformal structure of nonlinear metric-connection gravitational lagrangians, J. Math. Phys. 40 (1999) 3063–3071
- S. Cotsakis, V. Ivashchuk and V. Melnikov, p-Brane Black Holes and Post-Newtonian Approximation, Grav. Cosm. 5 (1999) 52–57
- S. Cotsakis, G.P. Flessas, P.G.L. Leach and L. Querella, Ever-Expanding, Isotropizing, Quadratic Cosmologies, Grav. Cosm. 6 (2000) 282– 290
- P.G.L. Leach, S. Cotsakis and G.P. Flessas, Symmetries, Singularities and Integrability in Complex Dynamics I: The reduction problem, J. Nonl. Math. Phys. 7 (2000) 445–479
- S. Cotsakis, V.R. Gavrilov and V.N. Melnikov, Integrable Spherically Symmetric p-Brane models Associated with Lie Algebras, Grav. Cosm. 6 (2000) 66–75
- P.G.L. Leach, S. Cotsakis and G. P. Flessas, Symmetries, Singularities and Integrability in Complex Dynamics II: Rescalings and Time-Translations in 2D Systems, J. Math. Anal. Appl. 251 (2000) 587–608
- J. Miritzis, P.G.L. Leach and S. Cotsakis, Symmetries, Singularities and Integrability in Complex Dynamics IV: Painlev´e Integrability of Isotropic Cosmologies, Grav. Cosm. 6 (2000) 282-290
- S. Cotsakis and G. W. Gibbons, (eds.) Mathematical and Quantum Aspects of Relativity and Cosmology. Springer LNP, 537 (2000)
- P.G.L. Leach, S. Moyo, S. Cotsakis and R. Lemmer, Symmetries, Singularities and Integrability in Complex Dynamics III: Approximate Symmetries and Invariants, J. Nonl. Math. Phys. 8 (2001) 139-156
- P.G.L. Leach, M.C. Nucci and S. Cotsakis, Symmetries, Singularities and Integrability in Complex Dynamics V: Complete Sym- metry Groups of Certain Relativistic Spherically Symmetric Systems, J. Nonl. Math. Phys. 8 (2001) 475–490
- P.G.L. Leach, S. Cotsakis and J. Miritzis, Symmetries, Singularities and Integrability in Complex Dynamics VI: Painlev´e Inte- grability of FRW-Scalar Cosmologies, Grav. Cosm. 7 (2001) 311–320
- S. Cotsakis and P. G. L. Leach, Symmetries, Singularities and Integrability in Nonlinear Mathematical Physics and Cosmology, In Proceedings of the Fourth International Conference on Symmetries in Nonlinear Mathematical Physics, Proc. Inst. Math. N.A.S. Ukraine 43 (2002) 128-135
- S. Cotsakis and J. Miritzis, Algebraic Integrability of FRW-Scalar Cosmologies, In Proceedings of the Ninth Marcel Grossman Meeting on General Relativity, V. Gurzadyan, R.T. Jantzen and R. Ruffini (eds.) (World Scientific, 2002) pp. 1943-1945
- S. Cotsakis and J. Miritzis, Scalar-Tensor σ-Cosmologies, In Proceedings of the Ninth Marcel Grossman Meeting on General Relativity, V. Gurzadyan, R.T. Jantzen and R. Ruffini (eds.) (World Scientific, 2002) pp. 1945-1947
- S. Cotsakis, Current Trends in Mathematical Cosmology, In Modern Theoretical and Observational Cosmology, S. Cotsakis and M. Plionis (eds.) (Kluwer, ASSL276, 2002), pp. 5–18
- S. Cotsakis and J. Miritzis, A Note on Wavemap-Tensor Cosmologies, In Modern Theoretical and Observational Cosmology, S. Cotsakis and M. Plionis (eds.), Kluwer, ASSL276, 2002, pp 67–74
- S. Cotsakis and P. G. L. Leach, Is Nature Generic? In Cosmological Crossroads, S. Cotsakis and E. Papantonopoulos (eds.), Springer, LNP592, 2002, pp. 3–15
- S. Cotsakis, Cosmological Singularities. In Cosmological Crossroads, S. Cotsakis and E. Papantonopoulos (eds.), (Springer, LNP592, 2002) pp. 59–94
- Y. Choquet-Bruhat and S. Cotsakis, Global Hyperbolicity and Completeness. J. Geom. Phys. 43 (2002) 345–350
- S. Cotsakis and E. Papantonopoulos, (eds.) Cosmological Crossroads. Springer LNP, 592 (2002)
- M. Plionis and S. Cotsakis, (eds.) Theoretical and Observational Cosmology. Kluwer ASSL, 276 (2002)
- Y. Choquet-Bruhat and S. Cotsakis, Completeness Theorems in General relativity, In Proceedings of the 10th Greek Relativity Conference, K. D. Kokkotas and N. Stergioulas (eds.) (World Scientific, 2003) pp. 145–149
- S. Cotsakis, Global Hyperbolicity of Sliced Spaces, Gen. Rel. Grav. 36 (2004) 1183–1188
- S. Cotsakis and I. Klaoudatou, Future Singularities of Isotropic Cosmologies, J. Geom. Phys. 55 (2005) 306–315
- S. Cotsakis and I. Klaoudatou, Modern Approaches to Cosmological Singularities, In Proceedings of the 11th Greek Relativity Meeting, J. Phys. Conf. Ser. 8 (2005) 150
- S. Cotsakis, Slice Energy and Theories of Gravitation, In Proceedings of the 11th Greek Relativity Meeting, J. Phys. Conf. Ser. 8 (2005) 39-48
- S. Cotsakis and I. Klaoudatou, Singular Isotropic Cosmologies and Bel-Robinson Energy. In Proceedings of the A. Einstein Century International Conference, J. -M. Alimi and A. Fu¨zfa, (eds.) (2005) pp. 842-7
- S. Cotsakis, The Future of Spacetime, (2005) (in Greek)
- S. Cotsakis and J. Miritzis, (eds.) Eleventh Conference on Recent Developments in Gravity. J. Phys. Conf. Series. 8 (2005)
- S. Cotsakis, Newtonian Melodies. Discovery & Science, 10 (2006) 58-65 (in Greek)
- S. Cotsakis, Space and Time, Gravity and Matter: Einstein’s Enigma, 6 pages (2006) (in Greek)
- S. Cotsakis and I. Klaoudatou, Cosmological Singularities and Bel-Robinson Energy. J. Geom. Phys. 57 (2007) 1303-1312
- S. Cotsakis, Future Singularities and Completeness in Cosmology, In Proceedings of the Thessaloniki Meeting on Cosmology and Gravitational Physics, N. Spyrou, N. Stergioulas and C. Tsagas (eds.), pp. 119-129
- S. Cotsakis and J. D. Barrow, The Dominant Balance at Cosmological Singularities, In Proceedings of the Greek Relativity Meeting NEB12, June 29-July 2, 2006, Nauplia, Greece, J. Phys. Conf. Ser. 68 (2007) 012004
- I. Klaoudatou and S. Cotsakis, Bel-Robinson energy and the nature of singularities in isotropic cosmologies, In Proceedings of the Greek Relativity Meeting NEB12, June 29-July 2, 2006, Nauplia, Greece, J. Phys. Conf. Ser. 68 (2007) 012010
- J. Miritzis and S. Cotsakis, Singularities of varying light speed cosmologies, In Proceedings of the Greek Relativity Meeting NEB12, June 29-July 2, 2006, Nauplia, Greece, J. Phys. Conf. Ser. 68 (2007) 012019
- S. Cotsakis and A. Tsokaros, Asymptotics of flat, radiation universes in quadratic gravity. Phys. Lett. B651 (2007) 341-344
- S. Cotsakis and A. Tsokaros, Flat, radiation universes with quadratic corrections and asymptotic analysis. In Proceedings of the MG11 Meeting, H. Kleinert, R. J. Jantzen and R. Ruffini, (World Scientific, 2008), pp. 2045-7
- I. Antoniadis, S. Cotsakis and I. Klaoudatou, Braneworld cosmological singularities, In Proceedings of the MG11 Meeting, H. Kleinert, R. J. Jantzen and R. Ruffini, (World Scientific, 2008), pp. 2054-6
- S. Cotsakis, Talking about singularities. In Proceedings of the MG11 Meeting on General Relativity, H. Kleinert, R. J. Jantzen and R. Ruffini, (World Scientific, 2008), pp. 758-68
- S. Cotsakis Slice Energy in Higher-Order Gravity Theories and Conformal Transformations, Grav. Cosm. 14 (2008) 176-183
- J. D. Barrow, S. Cotsakis and A. Tsokaros, A General Sudden Cosmological Singularity, Class. Quant. Grav. 27 (2010) 165017
- I. Antoniadis, S. Cotsakis and I. Klaoudatou, Brane singularities and their avoidance, Class. Quant. Grav. 27 (2010) 235018
- J. D. Barrow, S. Cotsakis and A. Tsokaros, The formal construction of sudden cosmological singularities, In Proceedings of the MG12 Meeting on General Relativity, T. Damour, R. J. Jantzen and R. Ruffini, Eds. (World Scientific, 2012), pp. 1793-5
- S. Cotsakis and G. Kittou, Singularities in cosmologies with interacting fluids, Phys. Lett. B. 712 (2012) 16-21; arXiv:1202.1407
- I. Antoniadis, S. Cotsakis, I. Klaoudatou, Brane singularities with mixtures in the bulk, Fortschr. Phys. 61 (2013) 20-49, arXiv:1206.0090
- S. Cotsakis, G. Kolionis, A. Tsokaros, The initial state of generalized radiation universes, Phys. Lett. B721 (2013) 1-6; arXiv:1211.5255
- S. Cotsakis, Structure of infinity in cosmology, Int. J. Mod. Phys. D22 (2013) 1330003; arXiv:1212.6737
- S. Cotsakis, Asymptotic Poincar´e compactification and finite singularities, Grav. Cosm. 19 (2013) 240; arXiv:1301.4778
- J. D. Barrow, S. Cotsakis, A. Tsokaros, Series expansions and sudden singularities, in: Proceedings of the MG13 Meeting on General Relativity, Stockholm, July 2012
- S. Cotsakis, G. Kittou, Limits of isotropic universes with interacting fluids, in: Proceedings of the MG13 Meeting on General Relativity, Stockholm, July 2012
- S. Cotsakis, G. Kolionis, A. Tsokaros, Asymptotic states of generalized universes with higher derivatives, in: Proceedings of the MG13 Meeting on General Relativity, Stockholm, July 2012
- S. Cotsakis, D. Trachilis, A. Tsokaros, Generic regular universes in higher order gravity theories, In: Proceedings of the MG13 Meeting on General Relativity, Stockholm, July 2012
- I. Antoniadis, S. Cotsakis, I. Klaoudatou, Dynamics and asymptotics of braneworlds, In: Proceedings of the MG13 Meeting on General Relativity, Stockholm, July 2012
- J. D. Barrow, S. Cotsakis, Geodesics at Sudden Singularities, Phys. Rev. D88 (2013) 067301; arXiv:1307.5005
- S. Cotsakis and G. Kittou, Flat limits of curved interacting cosmic fluids, Phys. Rev. D88 (2013) 083514; arXiv:1307.0377
- I. Antoniadis, S. Cotsakis, I. Klaoudatou, Enveloping branes and braneworld singularities, Eur. Phys. J. C74 (2014) 3192; arXiv:1406.0611.
- I. Antoniadis, S. Cotsakis, Ambient cosmology and spacetime singularities. Eur. Phys. J. C75 (2015) 1-12, CERN-PH-TH/2014-176, arXiv:1409.2220
- I. Antoniadis, S. Cotsakis, Topology of the ambient boundary and the convergence of causal curves, Mod. Phys. Lett. A30 (2015) 1550161; arXiv:1505.04737
- S. Cotsakis, S. Kadry, G. Kolionis, A. Tsokaros, Asymptotic vacua with higher derivatives, Phys. Lett. B755 (2016) 387-392; arXiv:1303.2234
- I. Antoniadis, S. Cotsakis, The large-scale structure of the ambient boundary, In: Proceedings of the Fourteenth Marcel Grossman Meeting on General Relativity, edited by M. Bianchi, R. T. Jantzen, R. Ruffini (World Scientific, Singapore, 2017); arXiv:1512.09216
- I. Antoniadis, S. Cotsakis, K. Papadopoulos, The causal order on the ambient boundary, Mod. Phys. Lett. A31 (2016) 1650122; arXiv:1603.08117
- I. Antoniadis, S. Cotsakis, I. Klaoudatou, Curved branes with regular support, Eur. Phys. J. C76 (2016) 511; arXiv:1606.09453
- S. Cotsakis, S. Kadry, D. Trachilis, The regular state in higher-order gravity. Int. J. Mod. Phys. A31 (2016) 1650130; arXiv:1212.2412.
- I. Antoniadis, S. Cotsakis, Infinity in string cosmology: A review through open problems. Int. J. Mod. Phys. D26 (2017) 1730009; arXiv:1610.01802
- I. Antoniadis, S. Cotsakis, The singularity problem in brane cosmology, Universe 3 (2017) 11; arXiv:1702.01908
- S. Cotsakis, J. Miritzis, K. Tzanni, Cosmological wave maps, Int. J. Mod. Phys. A34 (2019) 1950092; arXiv:1905.11049