最近的暗能量光谱仪（DESI）观测数据表明，原本被视为常数的暗能量可能随时间发生变化，甚至在过去曾变强而在近期逐渐减弱。这一发现打破了暗能量与暗物质互不相干的传统假设，促使物理学家重新探讨两者在物理上相互交织、协同演化的可能性。

多个理论模型指出，暗物质与暗能量之间的相互作用可以解释这种看似违反常理的能量变化。例如，若暗物质在宇宙历史的早期将部分能量转移给暗能量，不仅能解释暗能量的「幻影行为」，还能有效缓解宇宙学中测量早期与晚期宇宙膨胀速率存在9%偏差的「哈伯张力」难题。

弦论研究则提出了一种「暗维度」假说，认为一个微米级的额外维度可以作为暗物质与暗能量的共同来源。在此框架下，引力子流入该维度成为拥有质量的暗重力子，而该维度大小的变化会同时影响两者，预言了它们随时间衰减的规律，并为天体物理观测提供了潜在的检验途径。

Recent observations from the Dark Energy Spectroscopic Instrument (DESI) suggest that dark energy, once assumed to be a constant, may change over time, possibly having strengthened in the past and weakened more recently. This finding challenges the traditional assumption that dark energy and dark matter are independent, prompting physicists to reconsider the possibility that the two are physically intertwined and co-evolving.

Several theoretical models indicate that interactions between dark matter and dark energy can explain this seemingly counterintuitive energy variation. For instance, if dark matter transferred a portion of its energy to dark energy in an earlier cosmic era, it would not only account for the apparent "phantom behavior" of dark energy but also help resolve the "Hubble tension," a persistent 9% discrepancy in cosmic expansion rate measurements.

String theory research offers a "dark dimension" hypothesis, proposing that a micron-sized extra dimension could serve as a common origin for both dark matter and dark energy. In this framework, gravitons leaking into this dimension become massive dark gravitons, and changes in the dimension's size affect both components simultaneously, predicting their decay over time and offering potential astrophysical avenues for testing.