The concept you mentioned, that quarks are condensed space-time vibrating particles, does not align with our current understanding of quarks and their properties based on the established theories of particle physics.
In the Standard Model, which is the prevailing framework for particle physics, quarks are considered elementary particles, meaning they are not composed of smaller constituents. They are fundamental entities with no known internal structure. The Standard Model describes quarks as point-like particles with certain properties, such as mass, electric charge, and spin.
The idea that quarks are condensed space-time vibrating particles may be a concept derived from speculative or alternative theories that go beyond the Standard Model. Such theories, including some versions of string theory or other quantum gravity theories, propose that particles could have more complex underlying structures at extremely tiny scales. However, it's important to note that these theories are still highly speculative and have not yet been experimentally confirmed.
Our current experimental knowledge and the most successful description of elementary particles, including quarks, come from the Standard Model, which treats quarks as point-like entities without internal structure.