Opportunities of Fundamental Physics with High-Intensity Laser Fields

Homma, K.; Habs, D.; Mourou, G.; Rühl, H.; Tajima, T.

doi:10.1143/ptps.193.224

Cited by 11 publications

(20 citation statements)

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“…Recently, the quantum electrodynamics (QED) processes in a strong field background have attracted the interest of theoretical researchers as well as experimental researchers [1][2][3]. Especially, recent developments of a strong laser technique might provide us with a chance to test the Schwinger effect, which causes a pair creation phenomenon in the strong laser-electric field [4].…”

Section: Introductionmentioning

confidence: 99%

Quantum Larmor radiation in a conformally flat universe

2011

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We investigate the quantum effect on the Larmor radiation from a moving charge in an expanding universe based on the framework of the scalar quantum electrodynamics. A theoretical formula for the radiation energy is derived at the lowest order of the perturbation theory with respect to the coupling constant of the scalar quantum electrodynamics. We evaluate the radiation energy on the background universe so that the Minkowski spacetime transits to the Milne universe, in which the equation of motion for the mode function of the free complex scalar field can be exactly solved in an analytic way. Then, the result is compared with the WKB approach, in which the equation of motion of the mode function is constructed with the WKB approximation which is valid as long as the Compton wavelength is shorter than the Hubble horizon length. This demonstrates that the quantum effect on the Larmor radiation of the order e 2 ℏ is determined by a nonlocal integration in time depending on the background expansion. We also compare our result with a recent work by Higuchi and Walker [Phys. Rev. D 80, 105019 (2009)], which investigated the quantum correction to the Larmor radiation from a charged particle in a nonrelativistic motion in a homogeneous electric field.

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Section: Introductionmentioning

confidence: 99%

Quantum Larmor radiation in a conformally flat universe

2011

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“…If M is Planckian mass scale of 10 27 eV, the coupling expresses gravitational one. We may discuss possibilities to exchange scalar and pseudoscalar type of fields by requiring combinations of photon polarizations in the initial and final states [5]. The virtue of laser experiments is in the specifications on the all photon spin states both in the initial and final states in the two body photon-photon interaction.…”

Section: Dynamics Of Photon-photon Scatteringmentioning

confidence: 99%

“…The energy ω r satisfying the resonance condition can be defined as ω r ≡ m 2 /(1 − cos 2ϑ r ) [5]. If we take Planckian mass as M , the width a becomes extremely small.…”

Section: How To Overcome the Extremely Narrow Resonancementioning

confidence: 99%

“…The high intense laser fields may open up a new window for probing these fields via the coupling to laser photons with its degenerated feature and huge statistics per pulse. In this talk I present a novel method to search for these fields by observing second harmonic generation of photons in the quasi-parallel colliding system by focusing a single laser beam [4,5]. …”

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confidence: 99%

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Probing nonlinearity of semi-macroscopic vacuum by second harmonic generation with intense laser fields

Homma¹

2011

Proceedings of the 40th International Symposium on Multiparticle Dynamics

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Astronomical observations suggest the presence of dark matter and dark energy. This may be attributable to undiscovered fields of small mass below 1eV [1,2,3]. These fields are thought to evade our effort to detect them in laboratory, because they are supposed to weakly couple to matter. The high intense laser fields may open up a new window for probing these fields via the coupling to laser photons with its degenerated feature and huge statistics per pulse. In this talk I present a novel method to search for these fields by observing second harmonic generation of photons in the quasi-parallel colliding system by focusing a single laser beam [4,5].

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“…Recent suggestions involve, e.g., advanced interferometric setups [27][28][29], tests of Coulomb's law [30,31] or experiments utilizing high-intensity lasers [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Magnetically amplified light-shining-through-walls via virtual minicharged particles

et al. 2013

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We show that magnetic fields have the potential to significantly enhance a recently proposed light-shining-through-walls scenario in quantum-field theories with photons coupling to minicharged particles. Suggesting a dedicated laboratory experiment, we demonstrate that this particular tunneling scenario could provide access to a parameter regime competitive with the currently best direct laboratory limits on minicharged fermions below the meV regime. With present day technology, such an experiment has the potential to even overcome the best model-independent cosmological bounds on minicharged fermions with masses below O(10 −4 )eV.

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Opportunities of Fundamental Physics with High-Intensity Laser Fields

Cited by 11 publications

References 1 publication

Quantum Larmor radiation in a conformally flat universe

Quantum Larmor radiation in a conformally flat universe

Probing nonlinearity of semi-macroscopic vacuum by second harmonic generation with intense laser fields

Magnetically amplified light-shining-through-walls via virtual minicharged particles

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