Verlinde recently developed a theoretical account of gravitation in terms of an entropic force. The central element in Verlinde's derivation is information and its relation with entropy through the holographic principle. The application of this approach to the case of superconductors requires to take into account that information associated with superconductor's quantum vacuum energy is not stored on Planck size surface elements, but in four volume cells with Planck-Einstein size. This has profound consequences on the type of gravitational force generated by the quantum vacuum condensate in superconductors, which is closely related with the cosmological repulsive acceleration responsible for the accelerated expansion of the Universe. Remarkably this new gravitational type force depends on the level of breaking of the weak equivalence principle for cooper pairs in a given superconducting material, which was previously derived by the author starting from similar principles. It is also shown that this new gravitational force can be interpreted as a surface force. The experimental detection of this new repulsive gravitational-type force appears to be challenging.
An Entropic Force Schrödringer mechanism for Dark Matter generation
熵（突现）引力理论家提出，被认为是未观测到的暗物质可能是量子效应的产物，可以被视为突现能量（EE）。在这里，我们描述了一种新的薛定谔机制（SM）。该SM揭示了可能与上述EE相关的新量子引力态的存在。这是基于在[Physica A { \bf 511}（2018）139]中提出的微观Verlinder类熵力完成的，该熵力在极短的距离内偏离牛顿形式。
Classical spacetime as a gravitational condensate: USMEG-EFT emergence in comparison to Verlinde's entropic gravity
Peaceful Society, Science and Innovation Foundation（和平社会科学与创新基金会）；Department of Occupational Science & Occupational Therapy, Faculty of Medicine, University of British Columbia（不列颠哥伦比亚大学医学院职业科学与职业治疗系）；Faculty of Land and Food Systems, University of British Columbia（不列颠哥伦比亚大学土地与食品系统学院）
Conditions for stimulated emission in anomalous gravity-superconductors interactions
一些作者研究了非极端密度条件下凝聚态系统产生引力场的问题。广义相对论和最低阶微扰的量子引力预测在这种情况下，发射率非常小，因此只有当发生某种强量子效应时，这些现象才能变得相关。引力的量子方面仍然知之甚少。人们相信它们可以在表现出宏观量子相干性的系统中发挥作用，如超导体和超流体，导致物质和场之间的“异常”耦合。我们在这里提到伍兹，焦，贝克尔，阿戈普等人在这一领域的最新工作，Ummarino，Kiefer and Weber.本文介绍了YBCO等层状超导体中反常受激引力辐射的新结果。我们将超导体模型化为一组本征约瑟夫森结。超导参数的定义，我们的初步测量与熔融织构样品。我们明确地写出并数值求解约瑟夫森方程，该方程给出了超导体中总电流的正常和超分量，并由此导出总可用功率P=IV。然后，假设自发辐射和受激辐射的系数A和B已知，我们将激光放大器的Frantz-Nodvik方程应用于这种情况。该方程被适当地修改，以便允许由振荡传输电流给出的“连续泵浦”。所得结论对超导体引力辐射的估算有一定的参考价值。我们发现，即使A和B系数非常大（可能是由于上面提到的量子引力效应），受激发射的条件也是相当严格的，并且发射率强烈地受到IV值的限制。
Scalar-tensor gravity and Aharonov-Bohm electrodynamics with bosons: applications to superconductors
Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales（布宜诺斯艾利斯大学，理学院）；CONICET-Universidad de Buenos Aires, Instituto de Física Interdisciplinaria y Aplicada (INFINA)（阿根廷国家科学研究委员会-布宜诺斯艾利斯大学，交叉与应用物理研究所）；Free University of Bozen-Bolzano（博尔扎诺自由大学）
