For a quantitative investigation on the time evolution of heavy thermal dark matter particles at and after thermal freeze-out, close-to-threshold processes need to be taken into account which have a large impact on the observed dark matter relic abundance.  Our aim is to study the recoil effect of kinetically equilibrated dark matter pairs in a thermal medium and compute the center-of-mass recoil corrections to the near-threshold observables in the laboratory frame within the framework of potential non-relativistic effective field theories at finite temperature.  For the considered hierarchy of energy scales, we highlight the relative corrections due the recoil on the present dark matter energy density.

Nonrelativistic bound states lie at the core of quantum physics,

permeating the fabric of nature across diverse realms, spanning particle

to nuclear physics, and from condensed matter to astrophysics. These

systems are pivotal in addressing contemporary challenges at the forefront

of particle physics. Characterized by distinct energy scales, they serve

as unique probes of complex environments. Historically, their

incorporation into quantum field theory was fraught with difficulty until

the emergence of nonrelativistic effective field theories (NREFTs).



In this talk, we delve into the construction of a potential NREFT

(pNREFT), a framework that directly tackles bound state dynamics

reimagining quantum mechanics from field theory.

Focusing on heavy quarkonia, pNRQCD facilitates systematic definitions and

precise calculations for high-energy collider

observables. At the cutting edge, we investigate nonrelativistic bound

states in intricate environments, like the newly discovered exotics X, Y,

Z  above the strong decay threshold and the behavior in out-of-equilibrium

scenarios, such as quarkonium suppression in a Quark Gluon Plasma or dark

matter interactions in the early universe.



Our ability to achieve precision calculations and control strongly

interacting systems is closely linked to bridging perturbative methods

with nonperturbative tools, notably numerical lattice gauge theories.

Nonrelativistic bound states lie at the core of quantum physics,

permeating the fabric of nature across diverse realms, spanning particle

to nuclear physics, and from condensed matter to astrophysics. These

systems are pivotal in addressing contemporary challenges at the forefront

of particle physics. Characterized by distinct energy scales, they serve

as unique probes of complex environments. Historically, their

incorporation into quantum field theory was fraught with difficulty until

the emergence of nonrelativistic effective field theories (NREFTs).



In this talk, we delve into the construction of a potential NREFT

(pNREFT), a framework that directly tackles bound state dynamics

reimagining quantum mechanics from field theory.

Focusing on heavy quarkonia, pNRQCD facilitates systematic definitions and

precise calculations for high-energy collider

observables. At the cutting edge, we investigate nonrelativistic bound

states in intricate environments, like the newly discovered exotics X, Y,

Z  above the strong decay threshold and the behavior in out-of-equilibrium

scenarios, such as quarkonium suppression in a Quark Gluon Plasma or dark

matter interactions in the early universe.



Our ability to achieve precision calculations and control strongly

interacting systems is closely linked to bridging perturbative methods

with nonperturbative tools, notably numerical lattice gauge theories.

Nonrelativistic bound states lie at the core of quantum physics,

permeating the fabric of nature across diverse realms, spanning particle

to nuclear physics, and from condensed matter to astrophysics. These

systems are pivotal in addressing contemporary challenges at the forefront

of particle physics. Characterized by distinct energy scales, they serve

as unique probes of complex environments. Historically, their

incorporation into quantum field theory was fraught with difficulty until

the emergence of nonrelativistic effective field theories (NREFTs).



In this talk, we delve into the construction of a potential NREFT

(pNREFT), a framework that directly tackles bound state dynamics

reimagining quantum mechanics from field theory.

Focusing on heavy quarkonia, pNRQCD facilitates systematic definitions and

precise calculations for high-energy collider

observables. At the cutting edge, we investigate nonrelativistic bound

states in intricate environments, like the newly discovered exotics X, Y,

Z  above the strong decay threshold and the behavior in out-of-equilibrium

scenarios, such as quarkonium suppression in a Quark Gluon Plasma or dark

matter interactions in the early universe.



Our ability to achieve precision calculations and control strongly

interacting systems is closely linked to bridging perturbative methods

with nonperturbative tools, notably numerical lattice gauge theories.

The ultracold neutron (UCN) source at the Paul Scherrer Institut (PSI) is

being successfully operated since 2011 and has provided UCN for example

to the nEDM experiment, which has placed the tightest constraints to

date on the neutron's electric dipole moment in 2020. Currently the

successor experiment n2EDM is being commissioned at the same position.

At the second beam port, the neutron lifetime experiment τSPECT,

developed at Johannes Gutenberg University Mainz, is currently being set up for data taking. τSPECT is the first neutron lifetime experiment using spin-flip loading and 3-dimensional magnetic storage of neutrons.

In this seminar, I will talk about electroweak symmetric balls, which are macroscopic objects that exhibit restored electroweak symmetry within. These objects can arise in models featuring a dark sector containing monopoles or non-topological solitons that interact with the Standard Model through a Higgs portal. In the early universe, they could have emerged via a phase transition or preheating mechanism, accounting for all dark matter. Because of their electroweak symmetric cores, these objects have a large geometric cross-section relative to a nucleus, which generates a multi-hit signature in large-volume detectors. Furthermore, they can capture a nucleus through radiative means, releasing up to a GeV of energy for each interaction. This makes them excellent targets for large-volume neutrino detectors. The IceCube detector, in particular, provides a promising avenue for exploring the properties of these fascinating objects, with the potential to probe dark matter balls weighing up to one gram.