Publications

1. Observation of a zero-energy excitation mode in the open Dicke model, A. Bölian, P. Kongkhambut, C. Georges, R. D. Jara Jr., J. Vargas, J. Klinder, J. G. Cosme, H. Keßler, A. Hemmerich, Physical Review Research 7, L032056, (2025).

2. Controlled bit flip of period-doubling and discrete time crystalline states in open systems, R. D. Jara Jr., P. Kongkhambut, H. Keßler, A. Hemmerich,  J. G. Cosme, Physical Review B 112, 024303, (2025). [arXiv]

3. Torus bifurcation of a dissipative time crystal, J. G. Cosme, P. Kongkhambut, A. Bölian, R. J. L. Tuquero, J. Skulte,  L. Mathey, A. Hemmerich, H. Keßler, Physical Review Letters 134, 223601, (2025). [arXiv]

4. Impact of quantum noise on phase transitions in an atom-cavity system with limit cycles, R. J. L. Tuquero and J. G. Cosme, Physical Review A 110, 063314, (2024). [arXiv]

5. Apparent delay of the Kibble-Zurek mechanism in quenched open systems, R. D. Jara Jr., J. G. Cosme, Physical Review B 110, 064317, (2024). "Editors' Suggestion" [arXiv]

6. Observation of a phase transition from a continuous to a discrete time crystal, P. Kongkhambut, J. G. Cosme, J. Skulte, M. A. Moreno Armijos L. Mathey, A. Hemmerich, H. Keßler, Reports on Progress in Physics, (2024).

7. Realizing limit cycles in dissipative bosonic systems, J. Skulte, P. Kongkhambut, H. Keßler, A. Hemmerich, L. Mathey, J. G. Cosme, Physical Review A 109, 063317, (2024). [arXiv]

8. Theory of parametric resonance for discrete time crystals in fully connected spin-cavity systems, R. D. Jara Jr., D. F. Salinel,  J. G. Cosme, Physical Review A 109, 042212, (2024). [arXiv]

9. Dissipationless Counterflow Currents above Tc in Bilayer Superconductors, G. Homann, M. H. Michael, J. G. Cosme, L. Mathey, Physical Review Letters 132, 096002, (2024). [arXiv]

10. Bridging closed and dissipative discrete time crystals in spin systems with infinite-range interactions,  J. G. Cosme, J. Skulte, L. Mathey, Physical Review B 108, 024302, (2023). [arXiv]

11. Condensate formation in a dark state of a driven atom-cavity system, J. Skulte, P. Kongkhambut, S. Rao, L. Mathey, H. Keßler, A. Hemmerich, J. G. Cosme, Physical Review Letters 130, 163603, (2023). [arXiv]

12. Parametric control of Meissner screening in light-driven superconductors, G. Homann, J. G. Cosme, L. Mathey, New Journal of Physics 24, 113007, (2022). [arXiv]

13. Observation of a continuous time crystal, P. Kongkhambut, J. Skulte, L. Mathey, J. G. Cosme, A. Hemmerich, H. Keßler, Science 377, 6606, (2022). [arXiv]

• News articles and interviews:

"Researchers observe continuous time crystal" (Phys.org)

"A new kind of time crystal has been created and lasts 10 milliseconds" (NewScientist)

14. Dissipative time crystal in an atom-cavity system: Influence of trap and competing interactions, R. J. L. Tuquero, J. Skulte, L. Mathey, J. G. Cosme,  Physical Review A 105, 043311, (2022). [arXiv]

15. Terahertz amplifiers based on gain reflectivity in cuprate superconductors, G. Homann, J. G. Cosme, L. Mathey, Physical Review Research 4, 013181, (2022). [arXiv]

16. Realization of a periodically driven open three-level Dicke model, P. Kongkhambut, H. Keßler, J. Skulte, L. Mathey, J. G. Cosme, A. Hemmerich, Physical Review Letters 127, 253601, (2021). [arXiv]

17. Parametrically driven dissipative three-level Dicke model, J. Skulte, P. Kongkhambut, H. Keßler, A. Hemmerich, L. Mathey, J. G. Cosme, Physical Review A 104, 063705, (2021). [arXiv]

18. Vortex and soliton dynamics in particle-hole symmetric superfluids, J. Skulte, L. Broers, J. G. Cosme, L. Mathey, Physical Review Research 3, 043109, (2021). [arXiv]

19. Observation of a dissipative time crystal, H. Keßler, P. Kongkhambut, C. Georges, L. Mathey, J. G. Cosme, A. Hemmerich, Physical Review Letters 127, 043602, (2021). "Editors' Suggestion" [arXiv] 

• Commentary articles:

"Time crystals in Open Systems" by Z. Gong and M. Ueda

"Quantum time crystals open up" by P. Ball

• News articles and interviews:

"The first experimental realization of a dissipative time crystal" (Phys.org)

"Zu verrückt, um falsch zu sein" (Die Zeit)

"Auf den Spuren von Raum und Zeit" (Forschung und Lehre)

20. Higgs-mediated enhancement of interlayer transport in high-Tc superconductors, G. Homann, J. G. Cosme, J. Okamoto, L. Mathey, Physical Review B 103 (22), 224503, (2021). [arXiv]

21. Dynamical density wave order in an atom-cavity system, Ch. Georges, J. G. Cosme, H. Keßler, L. Mathey, A. Hemmerich, New Journal of Physics 23, 023003, (2021). [arXiv]

22. Higgs time crystal in a high-Tc superconductor, G. Homann, J. G. Cosme, L. Mathey, Physical Review Research 2, 043214, (2020). [arXiv]

• Press coverage:

"Time for a new state of matter in high-temperature superconductors" (Phys.org)

23. From a continuous to a discrete time crystal in a dissipative atom-cavity system, H. Keßler, J. G. Cosme, C. Georges, L. Mathey, A. Hemmerich, New Journal of Physics 22 (8), 085002, (2020). [arXiv]

24. Time crystals in a shaken atom-cavity system, J. G. Cosme, J. Skulte, L. Mathey, Physical Review A 100, 053615, (2019). [arXiv]

25. Emergent limit cycles and time crystal dynamics in an atom-cavity system, H. Keßler, J. G. Cosme, M. Hemmerling, L. Mathey, A. Hemmerich, Physical Review A 99, 053605, (2019). [arXiv]

26. Light-induced coherence in an atom-cavity system, Ch. Georges, J. G. Cosme, L. Mathey, A. Hemmerich, Physical Review Letters 121, 220405, (2018). [arXiv]

27. Dynamical Control of Order in a Cavity-BEC System, J. G. Cosme, Ch. Georges, A. Hemmerich, L. Mathey, Physical Review Letters 121, 153001, (2018). [arXiv]

• Press coverage:

"Disrupting crystalline order to restore superfluidity" (Phys.org)

28. Hierarchical relaxation dynamics in a tilted two-band Bose-Hubbard model, J. G. Cosme, Physical Review A 97, 043610, (2018). [arXiv]

29. Interaction blockade for bosons in an asymmetric double well, J. G. Cosme, M. F. Andersen, J. Brand, Physical Review A 96, 013616, (2017). [arXiv]

30. Center-of-mass motion as a sensitive convergence test for variational multi-mode quantum dynamics, J. G. Cosme, C. Weiss, J. Brand, Physical Review A 94, 043603, (2016). [arXiv]

31. Relaxation dynamics of ultracold bosons in a double-well potential: Thermalization and prethermalization in a nearly integrable model, J. G. Cosme, O. Fialko, Physical Review A 92, 033607, (2015). [arXiv]

32. Thermalization in closed quantum systems: Semiclassical approach, J. G. Cosme, O. Fialko, Physical Review A 90, 053602, (2014). [arXiv]