Abstract
In the work of Galley (Phys Rev Lett 110:174301, 2013) an initial value problem formulation of Hamilton’s principle was proposed and applied to non-conservative systems. Here, we explore this formulation for complex partial differential equations of the nonlinear Schrödinger (NLS) type, examining the dynamics of the coherent solitary wave structures of such models by means of a non-conservative variational approximation (NCVA). We compare the formalism of the NCVA to two other variational techniques used in dissipative systems, namely the perturbed variational approximation and a generalization of the so-called Kantorovich method. All three variational techniques produce equivalent equations of motion for the perturbed NLS models studied herein. We showcase the relevance of the NCVA method by exploring test case examples within the NLS setting including combinations of linear and density-dependent loss and gain. We also present an example applied to exciton–polariton condensates that intrinsically feature loss and a spatially dependent gain term.
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Notes
We note that the choice between 1, 2, and ± coordinates is arbitrary as the final results using the two different prescriptions are equivalent. In some problems, it is useful to work in the 1, 2 coordinates. For instance, this is the case when integrating out degrees of freedom that generate both conservative and nonconservative interaction terms in \({{\mathcal {R}}}\). In that case, the conservative contribution, including the difference between the two potentials \(V(\mathbf {q}_1) - V(\mathbf {q}_2)\) (see Sect. 2.1), might be more transparent when written in the 1, 2 coordinates rather than in the ± ones.
In principle, one could use a better suited ansatz like the q-Gaussian proposed in Ref. [62] at the expense of obtaining more complicated reduced NCVA ODEs.
References
B.A. Malomed, Prog. Opt. 43, 71 (2002)
B.A. Malomed, Soliton Management in Periodic Systems (Springer, Berlin, 2006)
Th Dauxois, M. Peyrard, Physics of Solitons (Cambridge University Press, London, 2003)
YuS Kivshar, G. Agrawal, Optical Solitons: From Fibers to Photonic Crystals (Academic Press, London, 2003)
D.J. Kaup, T.I. Lakoba, J. Math. Phys. 37, 3442 (1996)
D.J. Kaup, T.K. Vogel, Phys. Lett. A 362, 289 (2007)
C.R. Galley, Phys. Rev. Lett. 110, 174301 (2013)
C.R. Galley, D. Tsang, L.C. Stein, The principle of stationary nonconservative action for classical mechanics and field theories. arXiv:1412.3082 [math-ph]
P.G. Kevrekidis, Phys. Rev. A 89, 010102 (2014)
A. Hasegawa, Y. Kodama, Solitons in Optical Communications (Oxford University Press, Oxford, 1995)
L.P. Pitaevskii, S. Stringari, Bose–Einstein Condensation, Oxford University Press (Oxford, 2003) (Bose–Einstein condensation in dilute gases, Cambridge University Press (Cambridge, C.J. Pethick and H. Smith, 2002)
M.J. Ablowitz, B. Prinari, A.D. Trubatch, Discrete and Continuous Nonlinear Schrödinger Systems (Cambridge University Press, Cambridge, 2004)
I.S. Aranson, L. Kramer, Rev. Mod. Phys. 74, 99–143 (2002)
D.J. Kaup, SIAM J. Appl. Math. 31, 121–133 (1976)
J.P. Keener, D.W. McLaughlin, Phys. Rev. A 16, 777–790 (1977)
Y. Kodama, M.J. Ablowitz Studies, Appl. Math. 64, 225–245 (1981)
V.I. Karpman, V.V. Solev’ev, Physica D 3, 487–502 (1981)
D.J. Kaup, Phys. Rev. A 42, 5689 (1991)
D.J. Kaup, Phys. Rev. A 44, 4582 (1991)
S.A. Kiselev, A.J. Sievers, G.V. Chester, Physica D 123, 393–402 (1998)
Y. Kodama, Physica D 123, 255–266 (1998)
H. Goldstein, Classical Mechanics (Addison-Wesley, Reading, 1980)
C. Sulem, P.L. Sulem, The Nonlinear Schrödinger Equation (Springer, New York, 1999)
R.K. Dodd, J.C. Eilbeck, J.D. Gibbon, H.C. Morris, Solitons and Nonlinear Wave Equations (Academic Press, New York, 1983)
L. Debnath, Nonlinear Partial Differential Equations for Scientists and Engineers (Birkhauser, Boston, 2005)
D.J. Benney, A.C. Newell, J. Math. Phys. 46, 133–139 (1967)
A. Hasegawa, F. Tappert, Appl. Phys. Lett. 23, 142–144 (1973)
A. Hasegawa, Optical Solitons in Fibers (Springer, Heidelberg, 1990)
FKh Abdullaev, S.A. Darmanyan, P.K. Khabibullaev, Optical Solitons (Springer, Heidelberg, 1993)
A. Hasegawa, Y. Kodama, Solitons in Optical Communications (Clarendon Press, Oxford, 1995)
F. Tappert, C.M. Varma, Phys. Rev. Lett. 25, 1108–1111 (1970)
Y.H. Ichikawa, T. Imamure, T. Taniuti, Nonlinear wave modulation in collisionless plasma. J. Phys. Soc. Jpn. 34, 189–197 (1972)
B.D. Fried, Y.H. Ichikawa, J. Phys. Soc. Jpn. 34, 1073–1082 (1973)
E. Infeld, G. Rowlands, Nonlinear Waves, Solitons and Chaos (Cambridge University Press, Cambridge, 1990)
P.G. Kevrekidis, D.J. Frantzeskakis, R. Carretero-González (eds.) Emergent Nonlinear Phenomena in Bose-Einstein Condensates: Theory and Experiment. Springer Series on Atomic, Optical, and Plasma Physics, vol. 45 (2008)
R. Carretero-González, P.G. Kevrekidis, D.J. Frantzeskakis, Nonlinearity 21, R139 (2008)
J. Bourgain, Global Solutions of Nonlinear Schrödinger Equations (American Mathematical Society, Providence, 1999)
M.J. Ablowitz, H. Segur, Solitons and the Inverse Scattering Transform (SIAM, Philadelphia, 1981)
V.E. Zakharov, S.V. Manakov, S.P. Nonikov, L.P. Pitaevskii, Theory of Solitons (Consultants Bureau, New York, 1984)
A.C. Newell, Solitons in Mathematics and Physics (SIAM, Philadelphia, 1985)
G.P. Agrawal, Nonlinear Fiber Optics, 2nd edn. (Academic Press, San Diego, 1995)
D. Anderson, Phys. Rev. A 27, 3135 (1983)
YuS Kivshar, X. Yang, Phys. Rev. E 49, 1657 (1994)
A. Scott, Nonlinear Science: Emergence and Dynamics of Coherent Structures (Oxford University Press, Oxford, 2003)
S. Chávez Cerda, S.B. Cavalcanti, J.M. Hickmann, Eur. Phys. J. D 1, 313 (1998)
V. Skarka, N.B. Aleksić, Phys. Rev. Lett. 96, 013903 (2006)
V. Skarka, N.B. Aleksić, H. Leblond, B.A. Malomed, D. Mihalache, Phys. Rev. Lett. 105, 213901 (2010)
V. Skarka, N.B. Aleksić, M. Lekić, B.N. Aleksić, B.A. Malomed, D. Mihalache, H. Leblond, Phys. Rev. A 90, 023845 (2014)
H. Deng, H. Haug, Y. Yamamoto, Rev. Mod. Phys. 82, 1489–1537 (2010)
A. Amo, J. Lefrère, S. Pigeon, C. Abrados, C. Ciuti, I. Carusotto, R. Houdré, E. Giacobino, A. Bramati, Nat. Phys. 5, 805–809 (2009)
K.G. Lagoudakis, M. Wouters, M. Richard, A. Baas, I. Carusotto, R. André, L.S. Dang, B. Deveaud-Plédran, Nat. Phys. 4, 706–710 (2008)
M.D. Fraser, G. Roumpos, Y. Yamamoto, New J. Phys. 11, 113048 (2009)
G. Roumpos, M.D. Fraser, A. Löffler, S. Höfling, A. Forchel, Y. Yamamoto, Nat. Phys. 7, 129–133 (2011)
L. Dominici, R. Carretero-González, A. Gianfrate, J. Cuevas-Maraver, A.S. Rodrigues, D.J. Frantzeskakis, P.G. Kevrekidis, G. Lerario, D. Ballarini, M. De Giorgi, G. Gigli, D. Sanvitto, Nat. Comm. 9, 1467 (2018)
A. Amo, D. Sanvitto, F.P. Laussy, D. Ballarini, E. del Valle, M.D. Martin, A. Lemaitre, J. Bloch, D.N. Krizhanovskii, M.S. Skolnick, C. Tejedor, L. Vina, Nature 457, 291–296 (2009)
A. Amo, T.C.H. Liew, C. Adrados, R. Houdré, E. Giacobino, A.V. Kavokin, A. Bramati, Nat. Photon. 4, 361–366 (2010)
D. Sanvitto, S. Pigeon, A. Amo, D. Ballarini, M. De Giorgi, I. Carusotto, R. Hivet, F. Pisanello, V.G. Sala, P.S.S. Guimaraes, R. Houdre, E. Giacobino, C. Ciuti, A. Bramati, G. Gigli, Nat. Photon. 5, 610–614 (2011)
J. Keeling, N.G. Berloff, Phys. Rev. Lett. 100, 250401 (2008)
M.O. Borgh, J. Keeling, N.G. Berloff, Phys. Rev. B 81, 234302 (2010)
J. Keeling, N. Berloff, Contemp. Phys. 52, 131–151 (2011)
J. Cuevas, A.S. Rodrigues, R. Carretero-González, P.G. Kevrekidis, D.J. Frantzeskakis, Phys. Rev. B 83, 245140 (2011)
A.I. Nicolin, R. Carretero-González, Physica A 387, 6032 (2008)
L.A. Smirnov, D.A. Smirnova, E.A. Ostrovskaya, YuS Kivshar, Phys. Rev. B 89, 235310 (2014)
Acknowledgements
J.R. gratefully acknowledges the support from the Computational Science Research Center (CSRC) at SDSU, the ARCS foundations and Cymer. R.C.G. gratefully acknowledges the support of NSF-PHY-1603058. P.G.K. gratefully acknowledges the support of NSF-PHY-1602994 and NSF-DMS-1809074. We would also like to thank S. Chávez Cerda for a useful discussion on this topic, as well as for pointing us to the relevant work of Ref. [45].
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Rossi, J., Carretero-González, R. & Kevrekidis, P.G. Non-conservative variational approximation for nonlinear Schrödinger equations. Eur. Phys. J. Plus 135, 854 (2020). https://doi.org/10.1140/epjp/s13360-020-00689-x
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DOI: https://doi.org/10.1140/epjp/s13360-020-00689-x