Inflaton as a pseudo-Nambu-Goldstone boson by Noriaki Kitazawa

“…It is natural to imagine that there is some symmetry behind and an idea of the inflaton as a Nambu-Goldstone boson of spontaneous breaking of some symmetry has been examined. …”
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Fluctuation-induced Nambu–Goldstone bosons in a Higgs–Josephson model by Takashi Yanagisawa, Yasumoto Tanaka

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Higgs assisted Q-balls from pseudo-Nambu-Goldstone bosons by Bishara, F, Johnson, G, Lennon, O, March-Russell, J

“…Motivated by recent constructions of TeV-scale strongly-coupled dynamics, either associated with the Higgs sector itself as in pseudo-Nambu-Goldstone boson (pNGB) Higgs models or in theories of asymmetric dark matter, we show that stable solitonic Q-balls can be formed from light pion-like pNGB fields carrying a conserved global quantum number in the presence of the Higgs field. …”

Spontaneous Symmetry Breaking and Nambu–Goldstone Bosons in Quantum Many-Body Systems by Tomáš Brauner

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Thin-walled Higgs assisted Q-balls from pseudo-Nambu-Goldstone bosons by Fady Bishara, Olivier Lennon

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One-loop analysis of the interactions between doubly charmed baryons and Nambu-Goldstone bosons by Ze-Rui Liang, Peng-Cheng Qiu, De-Liang Yao

“…Abstract The interactions between the spin-1/2 doubly charmed baryons and Nambu-Goldstone bosons are analyzed within a manifestly relativistic baryon chiral perturbation theory up to next-to-next-to leading order, by using the so-called extended-on-mass-shell scheme. …”
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Accelerating Universe and the Scalar-Tensor Theory by Yasunori Fujii

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Soft-Theorems for Scalar Particles: The Dilatons Story by Raffaele Marotta

“…We summarize recent results regarding single and double soft theorems of two different particles named dilatons, the Nambu-Goldstone boson of the spontaneously broken conformal field theories and the massless scalar particle of the closed string theories. …”
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Leptonic CP asymmetry and Light flavored scalar by Yoshihiko Abe, Toshimasa Ito, Koichi Yoshioka

“…Abstract We consider a situation where right-handed neutrinos couple to a light scalar which is possibly a Nambu-Goldstone boson resulting from high-energy symmetry breaking. …”
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Noncommutative field theory of the Tkachenko mode: Symmetries and decay rate by Yi-Hsien Du, Sergej Moroz, Dung Xuan Nguyen, Dam Thanh Son

“…The theory has the form of a noncommutative field theory of a Nambu-Goldstone boson, which exhibits a noncommutative version of dipole symmetry. …”
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Vectorlike leptons and long-lived bosons at the LHC by Elias Bernreuther, Bogdan A. Dobrescu

“…We show that this can be the dominant decay mode of τ ′ provided the pseudoscalar couplings deviate from the case of a Nambu-Goldstone boson. For a range of parameters, the pseudoscalar is long-lived, and mainly decays into a photon pair at one loop, or into a tau pair at tree level. …”
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Enhanced neutrino polarizability by S. Bansal, G. Paz, A. A. Petrov, M. Tammaro, J. Zupan

“…Finally, we build several explicit models that lead to an enhanced neutrino polarizability by modifying the inverse see-saw majoron, i.e., the pseudo-Nambu-Goldstone boson of the U(1) L global lepton number responsible for generating small neutrino masses.…”
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Naturally light neutrinos in Diracon model by Cesar Bonilla, Jose W.F. Valle

“…Its spontaneous breaking at the few TeV scale leads to a physical Nambu–Goldstone boson – the Diracon, denoted D – which is restricted by astrophysics and induces invisible Higgs decays such as h→DD. …”
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Flavor hierarchies, flavor anomalies, and Higgs mass from a warped extra dimension by Javier Fuentes-Martín, Gino Isidori, Javier M. Lizana, Nudžeim Selimović, Ben A. Stefanek

“…The Higgs is identified as a pseudo-Nambu-Goldstone boson emerging from the same dynamics responsible for 4321 symmetry breaking. …”
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Inflation based on the Tsallis entropy by Zeinab Teimoori, Kazem Rezazadeh, Abasat Rostami

“…Then, we investigate two different potentials in our scenario, including the quadratic potential and the potential associated with the natural inflation in which the inflaton is an axion or a pseudo-Nambu–Goldstone boson. We examine their observational viability in light of the Planck 2018 CMB data. …”
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Search for the familon via B(+/-) --> pi+/-X(0), B(+/-) --> K(+/-)X(0), and B(0) --> K(0)(S)X(0) decays. by Ammar, R, Bean, A, Besson, D, Zhao, X, Anderson, S, Frolov, V, Kubota, Y, Lee, S, Poling, R, Smith, A, Stepaniak, C, Urheim, J, Ahmed, S, Alam, MS, Athar, S, Jian, L, Ling, L, Saleem, M, Timm, S, Wappler, F, Anastassov, A, Eckhart, E, Gan, K, Gwon, C, Hart, T

“…We have searched for the two-body decay of the B meson to a light pseudoscalar meson h = pi(+/-),K+/-,K(0)(S) and a massless neutral feebly interacting particle X(0) such as the familon, the Nambu-Goldstone boson associated with a spontaneously broken global family symmetry. …”

Phenomenology of CP-even ALP by Kodai Sakurai, Wen Yin

“…Abstract Axion or axion-like particle (ALP) has been usually considered as a CP-odd Nambu-Goldstone boson (NGB) from the spontaneous breakdown of a global U(1) symmetry. …”
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Light dilaton in rare meson decays and extraction of its CP property by Sudhakantha Girmohanta, Yuichiro Nakai, Yoshihiro Shigekami, Kohsaku Tobioka

“…Abstract The dilaton ϕ is a pseudo-Nambu-Goldstone boson associated with the spontaneous breaking of scale invariance in a nearly conformal theory, and couples to the trace of the stress-energy tensor. …”
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Cosmological phase transitions in composite Higgs models by Kohei Fujikura, Yuichiro Nakai, Ryosuke Sato, Yaoduo Wang

“…Each model may lead to a confinement-deconfinement transition and a phase transition associated with the spontaneous breaking of a global symmetry that realizes the Standard Model Higgs field as a pseudo-Nambu-Goldstone boson. Based on the argument of universality, we discuss the order of the phase transition associated with the global symmetry breaking by studying the renormalization group flow of the corresponding linear sigma model at finite temperature, which is calculated by utilizing the ϵ-expansion technique at the one-loop order. …”
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Chiral models of composite axions and accidental Peccei-Quinn symmetry by Roberto Contino, Alessandro Podo, Filippo Revello

“…The QCD axion arises as a composite Nambu-Goldstone boson (NGB) from the dynamics of a chiral gauge theory with a strongly-interacting and confining SU(N) factor and a weakly-interacting U(1), with no fundamental scalar fields. …”
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